“I can’t thank you enough for doing this, Olivia.”

“This” was testing out the machine Neville had made. If it worked like it was supposed to, it would allow anyone to change whatever they wanted about themselves- physical attributes, mostly, but also intelligence. For her part, Olivia couldn’t believe she was about to do “this.” Sure, if it worked, it would be amazing. Neville assured her that the physical modifications would work fine- it was the mental changes that could, as he put it, “backfire.” So she was about to become either a super-curvy genius… or a super-curvy brainless moron.

The machine consisted of a body scanner to get the base starting point of all your physical features, a control pad to input the changes, and a sealed compartment where the person stood to have the changes performed.

“I’m as excited to see if it works as you are,” Olivia replied. This isn’t how I expected to spend my Friday night, she thought. “So I just have to get scanned by it, input the changes I want, and then step in here?” she asked, pushing a lock of curly brown hair behind an ear.

“Yeah. Just remember you have to be naked for the scan and everything. I’ll be monitoring the machine and your vitals in the room over, so don’t worry about me seeing anything. I don’t have any cameras in here or anything.”

“And the super-oversized clothes are in the cabinet over there? I’ll need them after this.”

“They are. I’ll get them out for you.” He moved around the machine to a series of cabinets. Opening one, he pulled out an oversized sweatshirt and sweatpants- clothes that were way too large for Olivia now, but that might be just the right size later, depending on how big she wanted to get. Neville put them on a table by the door. “Here you go, Liv.”

“Alright, then, get out already,” Olivia teased. I’m gonna skyrocket through jobs after this. Goodbye, internship. Olivia heard Neville close the door behind him as he left. She exhaled, preparing herself for this process. I’m as ready as I’ll ever be for this. She started stripping off her clothes, letting everything fall to the floor around her. Soon, Olivia stood in just her underwear. God, I’m so fucking pale, I need to get out more. As she removed her bra, it suddenly hit her how inadequate it would be soon. I haven’t really decided how big I want to make them yet… but they’ll definitely be way too big for this “bra.” Olivia had been self-conscious of her A cups since she stopped growing in high school. She removed her panties as well and walked up to the machine.

Olivia pressed the “scan” button and stepped back, holding her arms horizontal to the floor like Neville had instructed her to earlier. An obnoxious beep sounded, reminding Olivia that she had to turn around so it could scan her from behind as well. The machine pinged a few seconds later, and the control panel lit up with the scan of her naked body.

She stepped up to the panel and tapped on the figure’s breasts. Text appeared to the side of her virtual body. It read:

Bust Measurements:
Underbust measurement: 32 inches
Bust measurement: 33 inches

There were arrows above and below each number, allowing her to select her desired size. How big do I want my boobs to get? Olivia started tapping the up arrow for the bust measurement. As she flipped through the inches, another virtual figure popped up to the right of the text. It looked just like her body on the left except with increasingly large breasts. This thing models really well… my computer boobs look like they actually have weight to them. I half expected them to just balloon out unnaturally…

She was playing with the modeling now, and kept hitting the up button to make her virtual tits bigger and bigger. Olivia finally stopped when they got way too big, down to her knees almost. I still have to walk after this, so let’s bring these down a touch…

Down to my hips? Nah, still too big. Pushing the down button repeatedly, she arrived at the size she wanted. Here we go. These are pretty huge… like volleyballs, probably? They’ll take some getting used to. But I’d rather have those than these A cups! Olivia tapped a check mark button at the bottom that brought her back to the original screen, although now it kept the bustier-Olivia model. She tapped and dragged to turn herself around. “Gotta balance out those tits,” she murmured. “Besides, what girl doesn’t want a big butt? I guess I can’t speak for everyone, but seriously. Butts are great.”

Olivia tapped the model’s butt and the same kind of feature appeared as with her bust.

Butt/hip measurement: 34 inches

She started tapping the “up” button, watching the new figure appear to the right and seeing her virtual butt get bigger and her hips wider. Oh, it’s going to keep my thighs proportionate too. Better that than having little stick legs under a gigantic booty, I think.

I think my bum is about equal to my boobs now. Olivia stopped making changes to her butt and tapped the check mark on the bottom right corner. When the virtual enhanced model was the only image on the screen, Olivia tapped on the check mark again. The screen read “Physical changes complete. Increase intelligence?” with two options, yes and no. Olivia hesitantly pressed yes. Here goes nothing, she thought. The screen changed to read “Proceed into chamber,” as the door opened. She stepped into it and the door slid closed.

I wonder how this thing works, she thought. Neville tried to explain it to me before but I totally zoned out. Something about different wavelength radiation and proteins and blah blah blah science jargon. I’m an economics person; biophysics makes no sense to me.

Well, it will after this, hopefully.

Olivia stood in the chamber, patiently waiting for something to begin. She felt the growth start as warmth in her chest and butt, and then it was plainly visible that her small breasts were already growing larger, giving her almost-flat chest more definition.

Oh geez. I’m about to have big tits.

No, huge tits. And a huge butt.

She excitedly watched her boobs swell, passing through sizes Olivia had never thought she would be able to attain. “Easily D cups now,” she said as she swayed her shoulders back and forth, making her breasts wobble side to side. “So that’s what that feels like.” During her movement, she also felt her backside jiggle a little. She slid her hands onto her growing ass and felt how large it was. Right now, it was a plump bubble butt much larger than what Olivia started with. Her hips and thighs had also grown slightly to accompany her bum.

Looking down at her growing breasts, they were passing by grapefruit size and quickly approaching melon sized, becoming wider and thicker, covering more and more space on her torso. She sank her fingers into her plush butt, momentarily surprised at its thickness, the swelling flesh pushing more and more into her hands.

Olivia brought her attention back to her tits. These are tits, she thought, looking at her swelling breasts. Her head-sized boobs were still steadily growing, still plumping up to larger and larger sizes. I’m officially in ‘huge’ territory now. Olivia’s previously cute nipples had grown as well, thickening into penny-sized nubs pointing stiff off of her burgeoning boobs.

The girls are getting huge… and heavy. I never thought about how much volleyball sized tits would weigh…

As Olivia watched, her breasts continued to grow, their bottom curves steadily approaching her belly button. They swelled outward in all directions, becoming wider and thicker, her nipples getting further and further away from her chest. Her tits would have been wider than her hips by now if her hips hadn’t been widening to accommodate her growing butt. Her bum now resembled two soccer balls, forming a bubble butt that would put most other women to shame.

Olivia’s boobs inched their way past her navel before they stopped. Before she could admire them, a helmet with wires attached to it dropped from the ceiling. It looks like something from a bad ‘50s sci-fi movie, Olivia thought as she put it on, dreading what could happen. She felt a kind of warm, kind of static feeling through her head. It lasted for what seemed like hours to Olivia, although it was really only a few seconds short of a minute. The helmet retracted into the roof of the machine afterwards.

I… don’t think I feel any smarter. Or dumber, for that matter. Sooo…

A screen appeared on the wall of the chamber. Text popped up on it: “Administering test.”

Oh. Okay. Let’s see how this went.

The test cycled through questions, which Olivia answered easily. “Four dimensional calculus? Simple. Protein folding? Child’s play. Economic modeling? Cake. When are you gonna give me something challenging?”

Then it hit her. It worked. I’m a fucking genius now. A feeling of excitement and relief overcame her. “Neville!” she shouted. “It worked! It fucking worked!”

The door opened and Olivia exited as quickly as she could, still adjusting to moving with two volleyballs pulling on her chest. Her boobs jiggled and bounced as she scrambled out of the chamber, still bursting with excitement. Out of the machine, Olivia finally got to check herself out. Her breasts were huge; exactly the size she wanted. The fleshy volleyballs hung on her chest down past her navel by an inch or so, capped with big nipples like inch-thick quarters. Olivia was wider at the edges of her tits than her still-thin arms, but not wider than at her hips. Her hips had grown considerably into child-bearing width, supported by thick thighs with no gap between them.  Turning her head around, Olivia checked out her ass as best she could. Previously small and pert, it had swelled into a plump bubble butt that stuck out a few inches behind her.

“I’m so fucking sexy,” Olivia whispered as she moved to put on the clothes laid out for her. Beforehand they had been much too large for her, but now she found herself filling them out easily. Olivia was pulling the sweatshirt over her head and down over her huge breasts when she had a realization. “Where am I going to find a bra to fit these? I’m definitely out of shelf sizes now.” As the bottom hem of the shirt rubbed over her nipples, Olivia shuddered with pleasure. Well that’s an added bonus...

Time to tell Neville the good news.