Guest Stars Miranda Cosgrove as Herself Nathan Kress as Himself Jerry Trainor as Himself Selena Gomez as Herself Keke Palmer as Herself Victoria Justice as Herself Jennette McCurdy as Herself Robert Downey Jr. as Himself (Robert Downey, Jr.) Jaden Smith as Himself Ariana Grande as Herself Chris Rock as Himself Steve Carell as Himself Noah Munck as Himself Jesse McCartney as Himself Kendall Schmidt as Himself Leon Thomas as Himself James Maslow as Himself Carlos PenaVega as Himself Shaun White as Himself George Lopez as Himself John Cena as Himself Miley Cyrus as Herself Taylor Lautner as Himself Cory Monteith as Himself Logan Henderson as Himself Ryan Sheckler as Himself Rosario Dawson as Herself Zoe Saldana as Herself Zachary Levi as Himself David Spade as Himself Lily Collins as Herself Jackie Chan as Himself Matt Shively as Himself Lea Michele as Herself Nicola Peltz as Herself Katy Perry as Herself Michelle Obama as Herself Justin Bieber as Himself (Performer) Ashley Argota as Herself Apolo Ohno as Himself Tina Fey as Herself Anna Faris as Herself Robbie Amell as Himself Jackson Rathbone as Himself Rihanna as Herself (Performer) Tyra Banks as Herself Adam Sandler as Himself (Angel Adam Sandler) Gage Golightly as Herself Jonah Hill as Himself Dev Patel as Himself Dylan Sprouse as Himself Nicholas Purcell as Himself