Guess Who This Playful Kid Turned Into!

Before this happy-go-lucky little lad was wowing the world as a professional dancer, he was just another ecstatic kid playing around in Salt Lake City, Utah.

This yowlin' youngster is known for his featured moves as a choreographer and dancer on a competitive celebrity reality show ... who quickly moved on to become a judge. You may also recognize him as one part of a dancing duo -- his younger sister is another popular personality.

Taking every opportunity to show off his other talents, this star has been in multiple musicals including "Footloose" and "Hairspray Live!"