Amber Riley Performs During 'Glee' Co-Star Harry Shum Jr's 'Mariah Carey Night' Dance on 'DWTS'

Instagram Amber Riley returned to Dancing with the Stars tonight (October 6)! The 40-year-old entertainer, who won the mirrorball trophy in season 17, came back to perform during the show. Amber hit the stage to sing "It's Like That" during "Mariah Carey Night," while her former Glee co-star Harry Shum Jr performed the Tango with his dance partner, Jenna Johnson! Earlier in the day, Amber teased that fans should tune in to DWTS because "you might see a past mirrorball champion and hear a familiar singing voice." Amber has been cheering Harry on since it was announced he would be . . .