Derek Hough rose to fame on the hit show “Dancing with the Stars,” winning the coveted mirror ball trophy six times — more than any other professional dancer. Recalling his childhood, Hough shares with host Giselle Fernandez some horrific stories about being bullied as a young boy, which he also details in his book, “Taking the Lead: Lessons from a Life in Motion.” When he was 12, Hough’s parents sent him and his sister Julianne to London so they could train to become professional dancers, an experience that landed them both on “DWTS.” Hough is now expanding his career with his “No Limits” Las Vegas residency show, where he gets to dance with Hayley Erbert, his new fiancé.