After dinner, the family drove home.
"Thanks so much for the dinner!" cheered Olivia.
"Yeah, I feel really good after that" added Rachel "Weirdly good, actually."
"You'd think so, with what they charge!" replied Josh.
"Oh honey, you know what that place is like" said Nicole "The way I see it, you two are the most perfect girls in the world. You deserve nothing less from us!"
"That's what I meant" said Josh quickly "Didn't mean to grumble at all."
The family pulled up outside their house.
"Alright girls, it's late, and you have school tomorrow. You should get ready for bed." said Josh.
Rachel and Olivia rushed out of the car, while Josh and Nicole stayed behind for a long kiss.
Soon afterwards, Olivia had changed out of her beautiful dress into her sleepwear, and was reading in her bed, when Nicole came in.
"Did you have a nice day, sweetheart?" she asked.
"Yeah, and an even better night!" asserted Olivia "That restaurant was aye-may-zing!"
"I'm glad you liked it so much" half-yawned Nicole "Let's hope the bullies don't give you too much of a hard time at school tomorrow, alright?"
"Yeah" said Olivia "Let's not think about them as I'm about to go to bed, ok?"
Nicole smiled. "Sweet dreams. I love you. If you ever need or want anything, just ask, ok?"
"Sure mom!" smiled Olivia as Nicole leaned down to give her a kiss "Good night!"
Meanwhile in the room next door, Nicole was staying up late messing with some chemicals.
"You really need some sleep" said Josh, coming in "You'll be tired in the morning!"
"This experiment is really important though, dad!" protested Nicole, who was still wearing her best dress "Please can I stay up a bit later?"
"Alright then" sighed Josh "But I'll have to say goodnight now. Nicole and I are shattered."
"Good night then!" said Rachel shortly.
"Good night my love" said Josh, exiting "I'm so proud of you."
Olivia read for a few more minutes before going off to a deep sleep. She dreamt that she was at the Olympic Games, holding the torch for her country. She dreamt she was competing in the decathlon against - men? No, that couldn't be right. But somehow when the events started, all the men kept losing to her. Not only did she thrash all the men, but she wasn't even trying! She won the gold with the greatest of ease, millions of people in the stands chanting her name. Just then, in her dream, an official came up and announced that she had been disqualified for using performance enhancing substances. Olivia tried to protest that she would never do that, but soon enough some police showed up to try to take her to jail. With ease she threw the police off her and began to run away as fast as she could, the world around her becoming a blur as she moved at superhuman speeds, when suddenly, she woke up.
Her whole body was aching. Immediately she knew that something, somehow, wasn't quite right. Her cellphone alarm buzzing, she quickly turned it off before sitting up in her bed. She was so sore, she almost started to wonder if she was somehow sick. Thinking better of it, the next thing she thought of was to try to look at herself in her mirror, to see if any obvious symptoms were visible. She quickly took off her sleepwear and headed to her bedroom mirror to take a look. Then, she gasped.
The transformation was incredible. Her previously average body now had muscles to put any junior cheerleader or gymnast to shame. Even the boys in her class didn't have muscles like this. Her legs and arms ... every inch of her young body was wrapped in armor-like solid slabs of muscles, from her perfectly defined 8-pack abs to her massive calves to her thick biceps ... there was definitely no shortage of new features on her body to look at. Indeed the only part of her that seemed relatively unchanged was her face, which retained its cute, youthful look. As well as extreme muscles, Olivia also felt like she was a little taller, and just slightly slimmer as well, though it was hard to tell.
"No wonder I'm sore" gasped Olivia as she flexed a little. Her new form looked amazing - so amazing that she could hardly believe it was her. A rush of power came over her, as she realized that now, nobody would be able to bully her. She felt like she was strong enough to do anything.
Olivia wasn't sure what it all meant, or if there were side effects, or most importantly, how and why the change had occurred. Thankfully, however, she knew somebody who would. Within a few moments she rushed naked out of her room (her old clothes would barely fit her anyway) and made for Rachel's room. There, what Olivia saw made her gasp in shock.
Rachel had been transformed as well. While Olivia had changed into a super-muscled preteen, Rachel had changed into a massive Amazonian goddess. Her muscles were the single most glorious thing Olivia had ever seen. inhumanly large and strong. Despite this Rachel too had retained her feminine side, with her body having grown and changed to keep perfect proportions. Through Rachel's now-torn dress, Olivia could see a figure that any girl would die for. Her muscles were indeed massive, but for example, her breasts looked a little more developed as well.
"Wow you look awesome" was all Olivia could say.
Rachel looked at her sister. "You too, huh? Guess that confirms my hypothesis."
She wrote down a little note in a heart-shaped pad while Olivia looked at her curiously. "Huh?" asked Olivia.
"Remember how last night we were at the restaurant - you felt great afterwards, right?"
"Yeah"
"Well, I figured that wasn't normal, so I did a bit of experimenting. I vomited up some of the food and thought I'd check it out to see what was in it."
"Eww"
"Yeah, but it was worth it. I found some traces of a real strange compound that seemed to bind to some of the lactose ... I've never seen estrogen receptors bind to PDPs in that way before..."
"In English, please."
"The milk had something in it. I've still got to do some experiments to work out what exactly it is but I've managed to isolate a little."
"And uh ... what are the, ummm... properties of this something?"
"Well, I guess that should be obvious. Look at you and me. Something weird sure is happening inside our bodies, and I'm totally confident it was because of that milk."
"I really like it" said Olivia "I feel incredible."
"Yeah, me too" replied Rachel "And since I vomited out part of the milk, I'm gussing you're going to become even bigger than me. I probably just grew faster because I'm older."
"Think anyone else might have had some?"
"I doubt it" laughed Rachel "Milk must be by far the most unpopular item on the menu there. It's a wonder they still order it. Did you come in here to ask me for some clothes?"
"And some answers" replied Olivia.
"Sure, take anything you like" replied Rachel "I'm going to get back to my research, find out what is happening here. This could be a HUGE scientific breakthrough!"
"Yeah" said Olivia dryly, flexing an arm "literally"
As Olivia started rummaging through Rachel's clothes - which were tight on her new body but at least they fit somewhat - Rachel spoke up again. "So, you going to school today? Looking like that?"
Olivia chuckled "Are you THAT insecure about your clothing?"
Rachel scoffed "No way, just ... wouldn't your classmates and teachers think it's weird?"
"I don't know" said Olivia "Aren't you going to school?"
"I'd barely fit through the doorway" replied Rachel "Besides, with the attention this body would get, I'd never be able to focus on my studies. I think I might just win the school science fair if I work this out."
"I think it might be more like a Nobel prize" laughed Olivia.
"Well, you're welcome to crash here with me if you like" replied Rachel "I'll bet mom and dad will be ok with it if you ask them. Though, just be careful you don't make them faint with how you've changed. In the meantime, I have some research to do!"