"How about this?" The clerk held up a clear back that held some sort of skimpy lycra gold and maroon body suit and sneakers, with the logo of 'The Stallions.' That was the name for the local middle school sports teams. Middle school was still a lot younger, but better than being ten. Luke decided to give it a try. He could always take the costume off and be the ten year-old again.
Stripping out of the boy's clothes, he pulled the one-piece body suit on. It was loose at first, but as he got his arms and legs through the openings he felt himself starts to grow. Turning to the mirror, he watched as his skin and hair darkened, and his body filled out. Luke was disappointed to find that he was not al that much bigger, but was amazed at how different he had become. Maybe 13 now, he was slender and wiry, and most obviously, Asian. Probably Chinese. Short, straight black hair covered his head, and he had nearly black, slanted eyes and a pug nose. While not impressive, there was an obvious bulge indicating he had some sexual development going on. After staring a minute, he decided that while he was not handsome, he wasn't ugly, either. And he felt really energetic. The slender body was deceptive - he had wiry muscles and suspected he was stronger than he looked.
"You like either a wrestler or a gymnast. Maybe both." said the clerk. "You probably need an athletic cup, though. That lycra won't offer any protection for the family jewels."