Jon went up to his room to find a full size mannequin in an outfit he recognized
it was from the ranma 1/2 anime, and he could only guess why he chose that costume for him, Jon wanted to do anything but put it on, it wasn't even that bad of a costume, just that in the anime, ranma turns into a girl, and when a magic stone is involved, it couldn't be good.
"Jon put on the entire outfit, nothing seemed to happen, but then Mikey yelled from the other room, oh there should be a wig in your closet, make sure to put that on."
Jon situated the short black wig on his head and instantly felt a shock go through his body, his wig got tighter as it became real, it turned red as well, he felt his entire body changing, he was becoming a girl. he got thinner he chest grew outwards his legs and thighs got wider and his feet shrunk, not to mention a whole bunch of minor details he didn't catch.
He felt the weight of his breasts now, and the distinct lacking of his penis.
Once again he heard Mikey entering his room and he said "don't worry, we got to stick with the anime, I'll turn you back and forth during the convention."
Jon turned around to see Mikey's costume