Immediately after Jon made his wish, Karyn felt her breasts (which were already bigger than normal) grow even bigger. They got so large that her shirt and bra ripped apart, leaving her topless. She was still frozen in place by Zoe's wish, so she couldn't cover herself up.
"Jon!" she screamed, then she began to cry. How was she going to fix this?
Jon looked at Karyn's basketball-sized breasts, confused at why his wish was granted to her instead of him.