Crystal stared at her reflection in the mirror hanging in her bedroom. It was Monday morning, the first day of senior year, and Crystal was resolved that this year things were going to be different. All through high school, she had been belittled, ignored, or flat out bullied, outside her small clique of geeks, nerds, gamers, and other assorted outcasts.
"Probably because you've looked like a frickin' 12 year old since you've been 12," Crystal muttered at her reflection. She had paused in front of it while dressing after her shower, and so stood naked, her underwhelming body on full display. She was 5 foot nothing barefoot and 90 pounds soaking wet. Skinny as a rail and flat as a board, she'd been wearing the same double-A bras since she'd graduated from a training bra. Which had happened when she was fifteen. And it had probably been totally unnecessary to make the change. If it wasn't for the long brown hair tumbling in a limp tangle down to the small of her back, people would mistake her for a boy. Hell, people had mistaken her for a boy. It was exactly why she wore her hair so impractically long. She had turned 18 over a month ago, but puberty seemed to have passed Crystal completely by, or at least the fun parts had. She hadn't gotten tits and curves, but she had gotten plenty of zits and all that bullshit girls had to deal with.
"But that's gonna change today," she said, louder, glancing at the bottle of green liquid on the dresser next to the mirror. Over the summer, she had been outside helping her mom in the garden when the bottle of Jumbo Gro plant food had tipped over and a small puddle had spilled out before Crystal could right it. The neighbors' cat, Princess, who had been watching the ladies work, came over and investigated. The skinny white cat had sniffed the liquid, then had lapped up some of it.
Crystal was about to shoo Princess away when the cat had stopped lapping, shuddered, and then just...grew! She didn't become a monster or anything, but Princess was definitely not a skinny little feline anymore. The cat herself hadn't seemed to notice anything, though; she had just licked her paws, then turned and trotted off, tail raised high. That was then when Crystal had noticed the other thing: Princess' mammary glands had gotten a lot bigger, heavy and full on the underside of the cat. Crystal had turned to her mom, who had been too engrossed in pulling weeds to notice Princess, and was about to tell her what had just happened, but then abruptly stopped. Her mom was on her hands and knees in the flower bed, and her breasts- so heavy and round and totally unlike Crystal's- swayed and bounced under her loose shirt as she pulled at a stubborn weed. Crystal had looked in the direction the cat had gone, looked back at her mom's cleavage, and then finally looked at the bottle of fertilizer. She had smiled as a plan had begun to form...
It had taken the rest of the summer, and more overgrown mice than she cared to remember, but Crystal was certain she now knew how the Jumbo Gro affected mammals and had gotten a dosage dialed in for targeted effects. She poured out a small amount of the fertilizer into a measuring cup. If she was right, and she was pretty she was- with her body's shortcomings it was only fair that she was a brilliant student- than this amount would push her to an impressive but not absurd 5'9'' with what should be D's or DD's. She had gotten a couple of different sizes of larger clothes laid out on her bed to choose from appropriate for her expected body.
Crystal raised the cup and toasted her reflection. "Here's to the new year and a new me," she said.