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