A Colossal Mistake

Robin sighed waiting outside the tall skyscrapers surrounding her in the parking lot.

The vast expanse was filled with long white lines dividing her and the other vehicles parked in a neatly organized pattern.

She looked out her window watching cars buzz by loudly on the highway.

She kicked her feet around rather impatiently in her red sedan awaiting her father.

It was the third time this week his old car had broken down.

"He should really just sell the damn thing, he makes plenty of money working for Expanse."

Expanse was the immense corporate superstructure that owned all the scientific research and development for a careful modern approach to the usage of biohazardous and radioactive material.

It was the top-of-the-line technology being used by the best scientific brains that the city could offer.

The company had just stumbled on a new resource, Xeranium, during a deep earth drilling operation.

It was similar in nature to Uranium and had even similar levels of radiation, however, it was a bright red dark crystal formed close to the earth's core.

The science division was eager to test its properties.

Robin's father specifically had been working on a brand new project for the last decade and this was its first announcement to the company of its minor success.

"I mean I guess he's doing important work…I just wish he had his other priorities in order."

Her mind began to wander thinking back to the many sleepless nights of imagining herself…bigger.

Robin had always wanted more.

She was barely five feet tall, a meager ninety-six pounds, and had a small pair of B-cup breasts most men and women didn't even notice.

She wanted bigger breasts, a big round bubble butt, and luscious lofty lips.

Most important of all though.

She wanted to be taller.

Not just a little bit taller, she wanted to be gigantic, huge, colossal in height.

The first time she watched Attack of the Fifty Foot Woman she was hooked.

She couldn't stop obsessing over the idea anytime it came up in her daily life.

Growing, expanding, gaining inches of height, everything about growing bigger turned her on immensely now.

Her thoughts quickly wandered, imagining herself suddenly gaining size rapidly.

Her ass filled up bigger and more plump as her hips quickly forced her button to pop and stretch as she grew gigantic.

Her arms and legs lengthened quickly against the sides of her car seat before overwhelming it with her size.

Her clothes snapped off one by one as she grew bigger and bigger.

She could feel her pussy start to ache at the thought, resisting the urge to masturbate in public.

Her two little titties felt a bit of pressure as her nipples began to get hard biting her tiny lower lip in response.

"God. He's taking so long. It's been an hour already. I just want to go home and watch Giantess porn…fuck…I'm so horny…what is with me today."

Her tight pink lips pouted looking down at her two small titties under her zip-up hoodie.

She felt herself giving them a light massage.

"Although…I really wish they were bigger…or if I could grow a couple of inches taller…I feel so fucking small all the time…I'm barely five feet tall."

She pouted, closing her eyes, imagining them filling out her bra growing bigger and bigger until her hands were overflowing with gigantic jiggly tits.

And then shortly after imagining her body starting to lengthen and grow an entire foot taller into a six-foot-tall proto-amazon athlete.

"Awhn…yeah…way bigger actually..."

Suddenly a knock on the window sounded out.

"Ugh! Oh! Dad."

She was startled reaching down to the door and clicking the automatic locks open.

His laugh was muffled, asking her to roll down the window.

She rolled her eyes, motioning to the button and hearing it slowly lower.

"Hey, sweetie. Sorry for the long wait, we just finished up the preparations. Want to see the test in action?"

She sighed looking at the time and then back up at her stepfather.

"Ugh. Yeah, I guess. There's no way I'm making it back now, I'll have to watch a rerun."

Dennis sighed looking back at her cute little pout with her bright red hair covering half of her face.

"I know you like spending your day off watching those…special movies…this just could be a huge breakthrough. You won't be disappointed I promise."

She hesitated again slightly before finally opening her door and slamming it shut.

"Alright, fine. Let's get it over with."

Robin quickly changed tune looking over at the massive two towers that jutted out of the main science building.

"It's so big..."

She smiled thinking of herself again as a colossal giantess smashing her bare body rubbing against its epic size.

Her pussy quivered in her already damp panties under her torn jeans.

"Yeah, the office complex is about two-hundred and forty-five feet tall, whereas the executive headquarters is just about two hundred and seventy-five feet. Pretty amazing engineering."

Her mind raced again thinking of how big she would have to be to stuff one inside of her wet vagina.

"That's almost three hundred feet tall…"

She blushed, staying silent for a moment as they both arrived at the tall glass doors outside the science building.

"Hmm. Is everything alright, dear?"

He was genuinely concerned about seeing her look away for a moment before blushing a deep red color in both her cute cheeks.

"Ugh. I'm fine. There's just like…a lot of people in there."

They both looked inside seeing the large audience before them eagerly awaiting entry into the main science lab.

"Don't worry little bee, just follow me."

He smiled with assurance as she immediately only grew more embarrassed.

"Ugh! Don't call me that. I'm not a kid anymore. So embarrassing."

He laughed, placing his hand on her shoulder.

"I'm sorry, you're right. You're practically an old woman by now. Twenty-one is a tough age, I will say,  you haven't had a chance to really experience life yet."

She couldn't stop blushing now, starting to really feel sick to her stomach almost immediately.

"Stop! I'm serious!"

He finally let up and sighed.

"Okay. Okay. Listen, I have to perform this test and then we can leave right after, I'll even let you check out the lab while I talk to the other scientists afterward."

Her ears suddenly perked up at the opportunity to see the inside of a government-funded super science laboratory.

"Fine."

She agreed, seeing his face light up with glee.

"Excellent! Alright follow me and follow any instructions given to you by the staff."

She gulped nervously.

He let out a long sigh before opening the tall glass door and heading inside.

The room was quite loud as several people had been waiting patiently for the final scientists to arrive.

A five foot ten scraggly bearded and bald scientist wandered toward them.

"Ah! Dennis! You're right on time...and who might this be?"

He smiled seeing her pout and looked away.

"Ah…my step-daughter Robin. She's a bit shy."

She started to blush and stay silent again pulling out her smartphone to scroll social media.

"Ah! Well, what a fine woman to meet at this bright time! Today we shall make our mark on history, Dennis!"

He laughed letting out a hearty chortle looking down at her short head full of red hair covering half of her face.

"Whatever."

She looked off seeing the door begin to open by the front of the lab.

"It's time!"

The man shouted again as the two of them followed him inside and were quickly confronted by men in hazmat gear.

Head to toe, they were covered with protective layers of plastic and other metallic fibers to protect against radiation.

Robin's eyes went wide quickly being assailed by scientists making their instructions well known.

"Here, take this suit, this helmet, and this breathing tube, yeah, just like that."

He aided her as fast as he could, helping her gear up alongside her father and his colleague.

They entered the wide room together seeing a large mechanical gun pointed at a glass wall surrounded by green sheets of special-grade metals.

"What the fuck is that?"

Robin exclaimed, hearing her voice echo in her helmet.

"The project we've been developing for over a decade now…The Expanse Emitter."

She scoffed.

"What a terrible name."

Dennis sighed.

"It's the company, not us, who decides these things."

Rudy laughed hearing him chuckle inside the helmet.

"Don't worry about its name, it's about to change history!"

Robin sighed.

"What does it even do?"

Dennis smiled looking down at her.

"Well…it takes nuclear energy and turns it into a mass exhibitor, it supercharges organic material and doubles the rate at which cells reproduce."

Robin looked over at Rudy making his way toward a small box with holes by the corner of the room.

"Okay…that still doesn't really explain what it does."

She scoffed as Rudy opened the box and snatched up a tiny little mouse smaller than his hand.

"Wait…what are you doing…"

She started to get nervous feeling sick to her stomach as he planted the mouse inside a glass box in the exposure area.

"See for yourself! Okay! Everyone stand back."

Dennis held his arm out in front of her, keeping her away as hundreds of eyes were viewing it remotely via TV screens all over the building.

He simply flicked a red switch hearing it hum and glow a bright crimson red light through the glass box.

The light seemed to attach itself to the tiny mouse, outlining its shape and form with a bright red glow.

The mouse let out a few delicate squeaks as the scientists recorded the data coming from the several scanners on the digital feed.

"It's working!"

One shouted watching the biological readout on the monitor skyrocketing.

The tiny mouse began to gain weight rapidly, its muscles grew larger and stronger, until finally, it began to double in size.

"My god…"

Dennis couldn't believe his eyes, the growth ray was working.

The mouse pulsed with size suddenly shuddering for a moment and then growing twice in size even larger than a fully grown rat.

"Holy shit…"

Robin couldn't believe it either.

The table rattled again as it continued to grow bigger quickly passing the size of a hamster and then a chinchilla.

The mouse shuddered again and again, growing bigger now about the size of a house cat.

Its furry body pressed up against its containment area starting to outgrow its glass cage.

"Oh my fucking god…it's really happening…it's a real growth ray!"

Her mind raced like crazy seeing a possible way to get bigger immediately triggered her intense sexual desires.

"Okay! That's enough, shut it off"

Said a nervous scientist in the readout room watching the biological numbers reaching astronomically record-breaking size and weight for its species.

Rudy flicked the switch hearing it slowly turn off as the bright lights faded.

Everyone in the room heard the mouse squeak again, this time however it was much louder.

The massive mouse wasn't done growing yet.

It quickly outgrew its former tiny size pulsating bigger and bigger until it grew to the size of a dog.

Dennis and Rudy slowly approached it watching its glow lighting up the room slowly fade away.

Suddenly a group of scientists in full gear rushed into the room and each latched onto the giant mouse holding it down with some force.

"Jesus! It's so heavy! Help me out here!"

Called out the tallest of the bunch holding the now much larger, yet still terrified mouse against the cold metal floor.

The giant mouse began to shudder again as it grew one last time quickly growing huge and overwhelming the scientist and tossing him aside.

It squeaked echoing throughout the chamber rumbling with growth as it quickly outgrew them into the size of a fully grown bear.

"Jesus Christ."

Dennis hesitated to act watching another few scientists rush inside jumping on it again and holding it down.

"Do it!"

One scientist shouted at the other two aiding him in subduing the overgrown beast.

He held it down as a doctor put it out with a long syringe, loaded with several doses of high-grade horse tranquilizer.

They finally managed to calm it down as they each looked down watching its huge body squirm before falling unconscious.

They each sighed carting it off to another laboratory for research as the rest of the crowd and employees went off to their duties.

Robin was in shock.

For all the wrong reasons.

She wanted to grow, and this was the first real evidence of her wish possibly being granted tenfold.

"If that little mouse grew that big off just three seconds under that growth ray…I could grow…really big…I could get fucking HUGE! Like a real Giantess…god…I need to-"

She thought her herself quickly snapping back to reality as she saw her stepfather towering over her petite figure.

Dennis looked down at her and immediately broke her attention.

"Sweetie. I'll be right back. I need to see what these findings are, thank you so much for being here for this, it really means a lot."

Robin blushed looking up at him before he gave her a big warm hug squeezing her tight before standing back up to his tall height.

"Y-yeah of course…no problem."

She stammered feeling her body tingling with anticipation looking at the laser, green with envy.

"Hey, so let's head out. I can't wait to see those findings."

Rudy looked down at her as she shook her head.

"Go on without me, I just need some time alone…there's too many people out there."

Robin was lying.

"Uh. Yeah, okay. No worries, kid. Just lock up after you're done. Nobody else comes into this lab, got it?"

Rudy was gullible.

He made a colossal mistake.

Rudy smiled looking back at her before clicking a button near the doorway.

The shades lowered, closing off any view into the chamber and dimming the lights in the lab.

Robin finally smiled for once, seeing him smile back before closing the door behind him.

She didn't have long.

Robin only waited a few seconds before stripping off all of her clothes.

First, her protective radiation suit, helmet, and breathing tube, all fell to the floor.

Her tight torn jeans came right off, then her hoodie, and shirt underneath, quickly tossing it all to the floor.

She stood there just in her small bra and a pair of cute little pink panties wet with her eagerness.

Her heart was racing, it was beating so fast she could barely stand it.

The idea of growing into a Giantess was intoxicating.

She couldn't believe what she was about to do, but at the same time, it was everything she had ever wanted.

Even the slight chance of growing even an inch taller made her mouth dry, her nipples hard, and her pussy wet.

It took her breath away.

She could feel her anxiety slowly building up like crazy.

"Okay…here I GROW!"

She said aloud before flicking on the red switch and jumping into position.

Her heart was beating out of her chest looking into the eye of the laser head pointing toward her getting brighter and brighter.

What Robin did not realize was that the glass box was meant as a dampening field between its delicate body and the growth ray.

With a flash, it fired off directly imagining her chest with a warm yet soft tingly feeling starting to build up inside of her.

"Mmm…it feels kind of nice actually."

She cooed, feeling the laser growing with intensity as her entire body began to be outlined in a shimmering ruby-red radiance.

Robin was getting over three times the amount of exposure, allowing the growth ray to exhaust all its radioactive energy directly into her petite little body at its maximum strength slowly building up over time.

Her chest began to tingle and feel increasingly hot.

"Ah…okay…maybe it's not so nice now…nngh!"

Her breathing became labored, panting feverishly as she began to tremble.

The heat poured into her flowing inside her body gathering in her blood cells absorbing it to its full potential.

She started to shake, feeling her thighs getting warm and tingly.

Gaining more and more strength creeping up and around her cute little butt and directly into her aching wet pussy.

And then suddenly it began to feel good.

Really good.

She could barely stand up straight moving her hands down her thighs and then onto her crotch rubbing it vigorously.

"Oh fuck…I can feel it…I'm going to grow…mmmhh…god that turns me on so much! AWHN!"

She suddenly snapped, reaching a climax, rolling her eyes and moaning like crazy.

And then it finally happened.

She started to grow.

First, her thighs grew thicker, digging her other hand into one and the other into her aching wetness.

"I'm so wet…awhn…I can't…I need…time to recover from my last orgasm…mmhh…I'm starting to get close again though…"

She soaked her panties in seconds before suddenly getting tighter around her hips and ass.

Bulging with growth she started to expand, gaining womanly curves rather quickly.

Her young teenage physique was starting to become rather shapely.

Filling out her thin body with exciting new thick seductive curves.

The ray only grew stronger with intensity as it reached phase two in the emission process.

She felt a sudden pulse shoot through her arms and legs before rising up two inches taller.

"Oh my god! I just got taller! It's working!"

Her breasts started to tingle finally starting to swell, gaining size.

"Awhn…yes…grow my tiny little titties…grow…."

She smiled devilishly moving her hands back up to them whimpering and watching them fill up rapidly.

They grew from small apples into larger soft oranges growing bigger in her hands.

She nearly came just from the sensation of her blossoming breasts sending waves of sensitivity into her tender nipples.

"Mmmhh…they're getting so big…mmmhh…GOD YES!"

She shouted unabated as the ray began to intensify, still steadily shooting a bright ruby ray onto Robin's rapidly changing physique.

Transforming from a petite young girl into a mature bodacious busty woman of incredible stature.

And the growth had just begun.

It projected further, far beyond the original mouse test, to phase three.

Without anyone to shut it down, Robin was growing humongous.

Her growth began to progress, gaining speed suddenly shooting up several inches taller before her ass and hips rumbled with growth getting wider and even thicker.

She yelped hearing her panties buckle and strain against her now quite big round ass still expanding larger against it.

Her ass bulged growing bigger and bigger as she felt it getting hotter and hotter until suddenly it snapped with a loud twang.

"Fuck! That felt good."

She cooed, rising up several more inches taller as her bra bulged outwards as her bubbling bosom soon outgrew her bra.

Her breasts rumbling with jiggly softness with every pulse they quickly grew into double DD-cup beauties.

Her tiny B-cup bra snapped off her shoulders outgrowing it as her breasts bulged outwards again and again.

Her already bountiful breasts grew into luscious DDD-cups overflowing her hands with incredible softness.

"LOOK at them! They're HUGE!"

She exclaimed latching onto them as the sensation only grew stronger.

The growth ray grew hotter with one final push of radioactive energy increasing its potency to a phase four emission.

Blasting her now nearly six-foot-tall body with a resounding four times strength laser.

She felt the heat rising to unreasonable degrees starting to sweat all over her voluptuous bare body.

Dripping droplets onto the floor she panted harder and harder.

She looked down at the ground beneath her now a whole foot farther away.

Quickly moving her head back up toward the laser starting to grin devilishly.

She stepped forward toward the light, trying to absorb as much of it as she could until the round reticle on the laser head was all being directed toward her two massive breasts in between the long line of her bubbling cleavage.

The growth ray bathed her body in spades, rapidly spreading the radioactive particles throughout her now quite tall and busty body.

Her chest began to tingle and get hotter and hotter until it was practically unbearable.

"Nngh! It's worth the pain! I want to be HUGE! I WANNA GET BIGGER!"

She shouted again loudly in pain, suddenly alerting some scientists nearby.

The bright laser beam shot into her chest and body and continued to cause her seemingly endless growth.

Causing her already tall and statuesque six-foot-tall body to continue growing far beyond mundane in size.

Her humongous breasts only grew more massive bulging outwards growing larger than she could have ever imagined.

They filled up rippling with growth gaining another cup size bigger after each rising growth spurt.

She quickly rose up past six foot three in one massive burst as her chest bubbled up bigger into tremendous G-cup beauties.

"Oh. My. God."

She said calmly as she looked down at the floor slowly getting farther and farther away.

Her head rose higher, bouncing up taller, gaining inch after inch of height.

Rising taller and taller past six and a half feet tall.

"Nngh! Awhn!"

A delicate moan escaped her lips, biting them for a moment as they began to plump up larger.

Her incredible hourglass physique was now a red glowing silhouette against the darkness.

Her shadows grew larger and larger rumbling with growth.

Her ass bubbled up outwards growing thicker and rounder, gaining inches on her waist without pause.

Before she realized it she was towering over the room within the next few seconds as the growth ray finally cut short running out of power.

The light died as the machine cut off all power to avoid overheating the nuclear materials.

But it was far too late.

The radiation emanating from her now shining hourglass body radiates outwards making the entire room glow a dark red color.

Robin smiled as her bright red radiant eyes shone light across the dark laboratory floor toward the doorway.

"Whoa…"

She heard her voice echo across the chamber feeling more energy and power than ever before.

Looking down at the growth ray made her start to instinctively touch herself knowing that she could reproduce those effects again and again.

It didn't take long before she stepped forward, her entire bodacious body jiggling in sequence toward the Emitter.

"Hmm…let's…go again…it's still hot…ready for more-"

Her sentence was cut short as the door opened behind her suddenly.

Dennis approached the blinding light coming from within the dark shadowy chamber.

He couldn't believe his eyes.

Robin was shining, shimmering, and glowing a beautiful bright red color like a fiery red-haired goddess.

Her two eyes pierced the darkness with a haunting red glow letting out a long and dramatic giggle.

Brightly burning like a red beacon glowing in the darkness.

Her holy light stretched across the shadows surrounding her tall statuesque physique decorating her new powerful height.

"Robin…?"

He called out looking up at her head now an entire foot taller than his own.

She was towering over him now.

Absolutely massive legs and thighs blocked his vantage point downwards moving up to her now giant round ass.

It was mesmerizing, not only in size but shape and tremendous thickness, unlike any woman he had ever seen.

Robin had easily been over seven feet tall by now, still growing slowly basking in her radioactive glow still affecting her now highly mutated body.

She had undergone a metamorphosis, the radiation emanating from the idle machine had biologically altered her muscles, fat, and even bones allowing them to reproduce at an alarming rate allowing her to grow to incredible proportions.

The once shy, short, and petite redhead Robin had completely transformed into a real seven-foot-tall amazon with big bouncy breasts larger than basketballs and an ass too wide and heavy it could crush your head.

Dennis was speechless

He could hardly breathe.

The sight of his red-headed stepdaughter and her bare bodacious bodice began sending him into an existential crisis.

"You're…"

Dennis uttered the first word he could only to be cut short immediately by her light feminine giggle.

"Bigger?"

He sighed trying to calm himself down before responding.

"Beautiful."

She blushed, feeling embarrassed looking down at the switch to the ray down under her tremendous thunder thighs.

He looked up at her newly grown bright rosy-red hair now much longer and voluminous stopping just before her gigantic bubble butt.

She finally turned to him, looking far down below her huge breasts to see his worried look beneath her now much larger body.

"You look short now."

Her luscious lips began to swell larger as she licked them still immensely turned on by her sudden growth spurt.

"Why-"

Before he could even finish his sentence she stepped forward getting closer and looking down at her significant height advantage like a shark stalking in blood-red waters.

"Why isn't it working?"

She crossed her arms under her gigantic chest pushing together her tremendous cleavage.

"What-"

She cut him off again.

"That mouse grew like five times its original size, why did I only grow this much?"

Dennis sighed trying to gather his thoughts noticing her sudden growth spurt had begun to start up once again.

"I should be…mmmhhh…way bigger…"

He watched her soft and curvaceous body jiggle and shake before suddenly plumping up larger.

Her thighs grew thicker, rumbling for a moment before gaining size.

Her legs started to lengthen gaining size as well as her tremendously large luscious ass.

She let out a long and exhausted moan as she suddenly bounced up another few inches larger to a healthy seven-foot-five tall.

A bead of nervous sweat rolled down his forehead knowing that her growing process had only just begun.

"Nngh. Okay…so that's a little bit better…but I'm not really as big as I want to be…"

She sighed moving her hand down by his head now just about eye level with her humongous cleavage.

"You're huge, my dear-"

She continued to stop him mid-sentence.

"I want to be BIGGER!"

She shouted at him suddenly flaring up another growth spurt rising up several more inches taller to a healthy seven foot nine feet tall.

He looked up at her growing body sending his vision lower into her overflowing breasts rubbing against his helmet visor.

"But…why…"

Dennis pleaded as she got closer hearing the Geiger counter built into his suit loudly ringing in his ears.

"Ugh! I can barely see you down there, hold on."

Her two massive hands latched onto the outside of his protective suit lifting him under his arms and off the floor with ease up to her eye level.

She smiled, feeling satisfied being able to simply lift him up without much effort made her incredibly confident.

"That's better. Now…how do I get bigger…faster?"

She finally sparked the proper question making him blush feeling almost a strange sense of pride in wanting to give her a scientific answer.

"Hm…well…the test was meant to charge the subject with enough mass and cell production equivalent to five times its original mass and weight."

He nodded trying to move his hands and arms around, unable to in her tight grasp.

"Can't you just explain things normally, and stop squirming."

He blushed, shaking his head in his little helmet.

"How long did you have the Emitter on when you exposed yourself?"

She blushed, forgetting the steps and how long.

"Uhh…I don't know. Like…four seconds?"

He gasped hearing his voice reverberate inside his helmet.

"Ah. Damn. That's not good. That may mean the Xeranium has been exposed to too much heat at once. It's also probably why you're glowing, sweetie."

He laughed and then changed tune seeing her body start to rumble as she moaned in response.

"Nngh. Okay…so…mmmhh…yeah…bigger."

She looked past her tremendous cleavage and his tiny little helmet seeing her perspective suddenly rising upwards.

She grew and grew slowly, starting to tower over the taller lab equipment and nearby shelves.

"You're still growing…I don't think it's such a good idea-"

She butted in again asserting her new amazonian sized dominance.

"To what? Grow bigger? Become a real Giantess? Just help me speed up the process…it's already inevitable…I mean just look at me. I'm holding you up by your arms…and I must be way bigger than you now, I've been growing this whole time."

She bounced up larger again another few inches with a long exasperated moan reaching up to eight feet tall.

Her breasts billowed outwards even larger as they grew into luscious H-cup bountiful beauties.

"See. I'm still getting bigger…it's just…really agonizing…how slow…mmmhh…it takes me to grow…mmmhhh….fuck…it feels really good though."

She kept growing bigger against his lower body as he felt their increasingly soft expanse press against him.

"Ever since I showed you that one movie you've been totally obsessed with this whole Giantess thing, I didn't realize it would come to this…"

He watched her face turn into one of envy, lust, and bitter contempt as she began to laugh loudly.

"Yeah…I mean you ARE right. I would do anything to become a Giantess. I mean look at me, I'm just as big as she was before her final growth spurt. Come on…just show me how to grow…please…I want it so bad…mmmhhh…"

Robin couldn't resist it any longer, she placed him back down and began moving toward the exposure area.

"Ugh! Just click the switch, okay? Let me get into position."

Her huge foot came crashing in, crushing the glass box and any nearby furniture before slamming her huge ass down directly in front of the growth ray.

"There, perfect. Okay, come on…make me bigger…make me grow…mmmhh."

Robin laid herself back against the wall spreading apart her long legs to reveal her soaking wet pussy.

It was bright red and oozing with desire, her huge clitoris throbbing like crazy had her start to pleasure herself feverishly.

"If you don't you'll have to sit here and watch me fuck my big juicy pussy until I outgrow this whole room…so just…mmmhh…press the button…"

Dennis froze, he didn't know what to do.

He looked down at the several dials noticing the intensity gauge turned down to only five percent.

It was hard to even focus listening to the now amazon-sized Robin moaning like an oversized tigress in heat.

"Nngh! Fuck me, I can't take it anymore! Hah…hah…hah…I'm so fucking horny…mmhh…"

She was practically growling, scratching the sides of her inner thighs before finally giving in and plunging her fingers deep into her luscious vagina.

He watched her huge fingers moving in and out of her wetness dripping hot fluids into the floor without pause.

Her huge breasts jostled atop her chest jiggling with every motion inside her pussy,  quivering with sexual pleasure.

He finally gave in, turning the dial from five percent all the way up to one hundred before letting out a long sigh.

"Are you sure about this?"

Her eyes lit up with excitement hearing the machine click and whirring before turning it on.

"YES! THANK YOU! MAKE ME GROW! I WANT TO BE A GIANTESS!"

She shouted with enthusiasm about letting loose a third orgasm, shaking and fingering herself faster and faster.

He clicked the button turning it on full power as he stepped back hearing the machine emitter overload with nearly limitless nuclear energy.

A bang and a flash sent a visible beam of pure white energy surrounded by a pearlescent ruby red shimmer fired off directly into Robin.

The energy surrounding her changed once again, quickly adapting to it and filling her with a reservoir of growth unlike any other ever known.

She suddenly boomed with size gaining an entire foot in size soaring up to nine feet tall in under a second.

"AWHN! YES! MORE!"

She shouted loudly, engrossed in energy as the growth ray sent waves so powerful it began to make Dennis shake in fear and awe and its power.

The beam pulsed outlining her already humongous frame in glowing red shimmering light.

She began to absorb its power rapidly, bouncing up another foot taller to a shocking ten foot tall behemoth.

"YES! YES! YES!"

She chanted echoing throughout the chamber as her ass began to break through the floor sending tiles snapping to pieces under her growing body.

Dennis backed away watching her legs quickly grow and expand against the floor longer and longer until they collided with the opposite-facing wall.

She quickly grew and grew expanding into a fifteen-foot-tall mini-giantess before erupting in another powerful orgasm.

This time he watched her gigantic vagina erupt her precious juices all over watching her growing body bounce and pulse gaining size rapidly.

He felt his back touch the door behind him as her body grew so big she encompassed the entire room.

Her vagina grew bigger and bigger as her legs burst through the walls and the ceiling, smashing her gigantic ass against the floor and crashing through the entire laboratory.

She grew and grew expanding past anything that previously she felt small inside now was like a sandbox.

And she wanted to play.

It wasn't until Dennis had reached the middle of the hallway she burst through the walls growing far past thirty feet tall.

Her huge vagina slowly crept taller and grew to expand closer to the Emitter now blasting its waves directly onto the tip of her gigantic clitoris the size of a king-sized bedpost.

She giggled mischievously drooling from her giant lips with immense pleasure unlike she had ever experienced.

Her huge hand wrapped around the previously giant machine like a sex toy.

"I'll keep it safe…hehehehe…inside me…awhn!"

She moaned, feeling it enter the cavernous depths of her wet vagina with a satisfying slip and then followed by near-constant vibration.

"Ooh! Mmmhh…It feels really good…"

Robin quivered feeling her entire body rumble before suddenly booming with size now starting to double with every growth spurt.

Her body rumbled growing upwards gaining several stories of size at once reaching a massive thirty feet tall within seconds.

The building began to evacuate in a frenzy, chaos and destruction followed in their wake as Robin had only begun her ascension.

"MORE! I WANT MORE!"

She screamed as her legs smashed through the outside walls and then suddenly gained size rapidly booming in size reaching a gigantic sixty feet tall.

Her breasts had tripled in size and roundness and quadrupled in weight.

They expanded past J-cups, deep into the K-cup range, and then further and further expanded into humongous L-cup monsters.

They grew into enormous jiggly and soft beach balls in her perspective, however to others they had grown into oceans of jiggling cleavage.

Her body was outgrowing everyone and everything.

She rose up and over his head even while sprawled out with her two legs spread wide open on the cold tile floor.

"BIGGER!"

She roared, demanding more uninhibited growth spurts rumbling with power.

She doubled in size, quickly reaching triple digits in height, truly ascending into a giant goddess of mythological proportions.

Her terrifying size and growth caused a wake of destruction around her, smashing, crushing, and decimating anything in her way.

She grew colossal, bigger than any woman or man had grown before, larger than the mistake of leaving her unattended beside a literal growth ray.

She expanded outwards gaining thousands of pounds in weight, muscle, and giantess size, growing into a terrifying one-hundred and twenty-foot tall goddess of immeasurable power.

Her lower half slowly rose off the ground letting loose hundreds of pounds of loose rocky debris.

Two massive towering legs now stretched into the sky.

Her humongous round ass the size of an entire house slowly rose ominously up and over most nearby buildings.

She was titanic in size at her new colossal one hundred and twenty-foot tall height towering over everything beneath her dripping wet pussy.

Her titanic titties easily blocked out a fair amount of sunlight shining down on the chaotic city streets.

She looked down and began to smile seeing her feet now twice the size of most cars and trucks standing beside several in the parking lot.

Lifting her leg and placing it back down caused an earthquake to erupt, smashing apart the remaining untouched concrete.

"I'm so…mmmhh…BIG!"

Her voice now echoed for miles hearing dozens of people fleeing away from the crumbling science laboratory.

She looked down at her feet seeing tiny little pebbles that had her previous height and could have crushed her body entirely now were the size of a small ant in comparison.

The people of the city fled as far as they could before even more terror broke loose.

Robin giggled hearing her cute and terrifying voice echo across the landscape.

"I'm so big…I can't believe it."

She stomped forward moving outside of the ruined tower examining the wake of destruction it had caused.

"Wow…I did that…mmmhh…I'm so powerful…"

Her hands wandered down to her soaking wet cavernous vagina starting to feel a delicate vibration against the tip of her clitoris.

"Awwhnnn…that little…growth ray…nngh…is still working inside me…that's…incredible."

The now giantess Robin let out a deafening moan before her entire body began to blind everyone in its magnificent crimson radiance.

Robin began to double in size once feeling the entire world around her shrinking rapidly.

Her towering legs shot into the sky far past the clouds as her enormously tremendous breasts billowed outwards like a hurricane of soft jiggly cleavage.

They pulsate growing larger and larger into magnificent mammaries to match her sky-high hips and thunder goddess thighs.

She ascended into a true goddess growing to an astronomical two hundred and forty feet tall mother behemoth.

She looked down at the once massive science building now reduced to the width of her two feet standing together.

She turned, measuring her height against the two tall towers before feeling the sensation creeping in again.

"BIGGER! BIGGER! BIGGER!"

She chanted bouncing up several hundred stories at once watching her perspective continue growing far up beyond the rooftops of the tallest towers in the city.

The intense glow of the radiation seeped beyond the trees and into the landscape as she continued growing larger, gaining brightness gaining size rapidly.

Until finally she reached far above three hundred feet growing into a super giantess.

She giggled mischievously playing her two elbows atop the roof of each tower leaning onto them ever so slightly hearing the metal bend and break like aluminum.

Her eyes wandered down to her titanic breasts, each of them wider than several stories of the tower.

She laughed again looking even further down at the tiny speck at her feet.

Dennis climbed over the rubble getting dangerously close seeing her toes now the size of small homes each like daunting cliff faces at his average height.

Robin was hundreds of times larger than him.

She couldn't hear anything he was doing, let alone notice what was even down by her feet.

Somehow though Robin knew.

She knew he would come looking for her.

Robin smiled leaning down as several boulders and crushing rocks fell and burst to pieces as she flexed her foot muscles creating a deeper crater beneath.

Dennis immediately fell to the ground unable to withstand the several thousand joules of force she created with just a simple motion of her giant body.

Two massive fingers reached down and pinched on his radiation suit pulling him far beyond either of the tower's sky-high heights and off into the clouds.

He felt weightless being flung through the air by her two delicate fingers like towers of soft, yet dense flesh lifting him through the sky.

He looked down seeing the rooftop just about the same height as her two mammoth mammaries jiggling like waves in the ocean.

Her boundless cleavage was expansive and mesmerizing, moving slowly cascading soft ripples across her flesh with every movement she made.

"Hi, Dad."

She giggled mischievously looking down at Dennis making a note of her new tremendous towering body looming over him like a real-life goddess.

"Robin…"

He wanted to speak, but his words came up empty seeing her smile devilishly in the awkward silence.

Her huge fingers trailed across her bountiful ocean of cleavage stroking her two nipples each bigger than the front of a commercial airline plane.

He watched them tremble before growing in size getting hard as she pinched them moaning.

"I've grown so big…I could've crushed you with just my fingers…or with these giant building-busting boobies… they're so fucking big….and soft…and gigantic…god…I'm still so horny…but you know what…I wouldn't do that to you. You let me grow and grow…and grow…you made me this way…and I have to thank you for that."l

Her tone got more malicious, devious, and frankly terrifying hearing her start to laugh loudly.

"Everyone else though is fair game…mmmhh…just watch me take over this entire planet…they are going to worship me…kneel at my toes…and beg for me…mmhhh…fuck!"

She screamed, deafening his ears as her body began to rumble again before starting to glow brightly once again.

Dennis fell trying to resist her burgeoning body fruitlessly as she bumped into the tower in confusion.

The tower started to crumble as its structural integrity was quickly compromised, plowing her giant busty boobies through five stories of office building space.

Before Dennis could react he fell into the debris cascading down into the dark abyss before seeing everything turn to bright red light flashing before his eyes.

Robin ascended far past the clouds shining with radiance as she grew and grew and grew expanding into a colossal giantess.

Her head slowly turned to the humongous tower beside her, now barely half her height reaching just above her tremendous earth-shatteringly huge hips and tremendously long and large thundering thighs.

"There's something…I have to do…mmmhhh…and I can't wait any longer."

She bit down on her luscious lower lip patting her pussy and giving it a tender stroke before lifting up her legs.

Her towering thighs reached over atop the roof access of the shorter tower of the two, straddling it between her legs.

Her now six-hundred-foot tall body was overflowing with double the size of the double towers, still struggling to fit it inside of her wet cavernous vagina.

Until finally it burst into her crumbling and being smashed to bits.

The world shook as her mountainous body motioned up and down.

She smashed everything to pieces as she consumed everything around her gigantic growing body.

The crumbling tower plunged in and out of her wetness like a train entering an endless tunnel of soft sweet goodness.

She felt it again, the same powerful orgasm that had been causing these outrageous growing spurts of epic proportions.

She shouted unabated continuing to expand and grow still gaining size rapidly and booming with growth gaining hundreds of feet in mere moments.

Before she knew it, she had grown to the size of an entire country, looking down at the geodesic mass beneath her titanic body.

She came again and again.

Unable to control herself she rained thousands of titanic droplets of her goddess wetness onto the landscape below.

Robin continued to grow and orgasm.

Rise and expand.

Growing bigger and bigger until she had surpassed thousands of feet tall in size growing into a giga-goddess giantess.

She had grown over ten times the size of those once vast and towering structures before, now just barely about the height of her ankles.

Her bright beaming body cast rays of ruby red radiating light onto everything beyond the pastures and fields of grass, rocky mountains, and long Island stretches into the vast deep sea.

The world had changed that day.

Robin would never be the same again.

She was a goddess now.

Her reign of terror had just begun.


PS: HAPPY SPOOKTOBER EVERYBODY! :D