Robert Irwin shirtless for Dancing with the StarsIt was really only a matter of time.... It was really only a matter of time before Robert Irwin went shirtless on Dancing with the Stars (US). That was today for a Salsa number with Witney Carson, gyrating to “Million Dollar Baby” by Tommy Richman in “Tik Tok Night.”This marks the third appearance for Irwin, scoring 22 points and proceeding to Week 4 “Disney Night.”