Guest Stars Ryan Seacrest as Himself Taylor Swift as Herself Chris Brown as Himself Meghan Trainor as Herself Justin Timberlake as Himself Florida Georgia Line as Themselves Jason Derulo as Himself Steven Yeun as Himself Gina Rodriguez as Herself Zendaya as Herself (Zendaya Coleman) Brittany Snow as Herself Taraji P. Henson as Herself (Taraji Henson) Nick Jonas as Himself Jeremy Piven as Himself Anna Camp as Herself Reba McEntire as Herself Kelly Clarkson as Herself Ian Ziering as Himself Madonna as Herself Snoop Dogg as Himself Rihanna as Herself Ludacris as Himself Jennifer Hudson as Herself Iggy Azalea as Herself 5 Seconds of Summer as Themselves Mike Tyson as Himself Billy Eichner as Himself Nick Simmons as Himself Charlie Wilson as Himself Ryan Tedder as Himself Jason Aldean as Himself Sam Smith as Themselves Nate Ruess as Himself Alesso as Himself Tom Ford as Himself