The first think Karyn felt after the smashed bottle splashed onto her leg was a pressure on her chest. Her boobs grew again, this time though they weren't the only thing. She got taller, and her shoulders broadened. Her bust grew enough that it was still proportionately larger than her first wish made it. She could feel her jeans start to get too tight as she grew. Her hips stayed about the same width as the rest of her body got larger, her waist was less narrow. The most uncomfortable thing was her new penis and balls in her now too small panties. They were squished uncomfortably. She filled out her formerly baggy green sweater, now it would be a fairly normal fit, if she didn't have enormous boobs. Her face had changed, looking like the brother she didn't have, though her hair remained long and blond. She wasn't hyper masculine, but she had gotten quite tall, over 6 feet.
Jon on the other hand had gotten slightly shorter, but his hips had filled out more than enough to keep his pants up despite his overall smaller size. He'd ended up surprisingly curvy, his boobs were nearly as big as Karyn's. His jeans were tight over his expanded hips and butt, though the waistband was far too loose to remain where it should. His shirt was obviously too big everywhere but his bust, though the way it's folds rested hinted at his new figure. His face resembled Zoe, though his hair remained nearly the same as it had before the potion hit him.
As Karyn stared at Jon in shock she realized that her body wasn't the only thing affected, she found herself noticing his new bust and curves in ways she had never done before. She hadn't just become a guy, she had become a straight guy, and suddenly all the attention Sarah got made sense. Of course Jon's new body was far better than Sarah's, he had come out much bustier and curvier.
