Special Guest Stars will.i.am as Himself Olly Murs as Himself Guest Stars Val Chmerkovskiy as Himself Mark Ballas as Himself Peta Murgatroyd as Herself Karina Smirnoff as Herself Sharna Burgess as Herself Lindsay Arnold as Herself Derek Hough as Himself Zendaya as Herself Kellie Pickler as Herself Aly Raisman as Herself Jacoby Jones as Himself Ingo Rademacher as Himself Kym Herjavec as Herself (Kym Johnson) Sean Lowe as Himself Andy Dick as Himself Victor Ortiz as Himself