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