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