WOW, Robert Irwin!! In a new clip from the Dancing With The Stars Tour's stop in Las Vegas over the weekend, Robert dazzled crowds alongside his dancing partner Witney Carson. And in the middle of it all, he ripped his shirt off and FLEXED his rippling muscles! Related: Robert & Family Allegedly REFUSED To Meet With Meghan Markle & Prince Harry See for yourself (below): View this post on Instagram A post shared by PerezHilton.