Derek Hough may have a teenaged spring in his step but he's actually twenty-seven! Hough was born on May 17, 1985 in Salt Lake City, Utah, to a Mormon family. When he was only twelve, Derek and his sister Julianne (who has also been a DWTS competitor and champion) moved to London to train with renowned dancing couple, Corky and Shirley Ballas. That's when Derek met fellow DWTS pro Mark Ballas, Corky and Shirley's son. Which means he and Mark not only work on the same smash hit TV show, they also partly grew up together! They have a band, too — Ballas Hough. How talented is the 27-year-old Derek? He dances, he sings, the plays guitar, he choreographs. Can you spell, "multi-faceted entertainer"? We can't wait to see what else he accomplishes by the time he's thirty!