Katy Perry
Self
Acting
Shannon Woodward
Self
Acting
Rachael Markarian
Self
Acting
Mia Moretti
Self
Acting
Glen Ballard
Self
Sound
Adam Marcello
Self
Acting
Casey Hooper
Self
Acting
Patrick Matera
Self
Acting
Max Hart
Self
Acting
Kesha
Self
Acting
Joshua Moreau
Self
Acting
Lauren Allison Ball
Self
Acting
Tasha Layton
Self
Acting
Leah Adler
Self
Acting
Lockhart Brownlie
Self
Acting
Anthony Burrell
Self
Acting
Lexie Contursi
Self
Acting
Ashley Ashida Dixon
Self
Acting
Brandee Evans
Self
Acting
Bryan Gaw
Self
Acting
Malik Le Nost
Self
Acting
Scott Myrick
Self
Acting
Cassidy Noblett
Self
Acting
Bradford Cobb
Self
Acting
Johnny Wujek
Self
Acting
Steven Jensen
Self
Production
Todd Delano
Self
Acting
Tamra Natisin
Self
Acting
Angela Hudson
Self
Acting
Ann Hudson
Self
Acting
David Hudson
Self
Acting
Keith Hudson
Self
Acting
Mary Hudson
Self
Acting
Mark Hunter
Self
Acting
Angelica Cob-Baehler
Self
Acting
Jason Flom
Self
Acting
Adele
Self
Acting
Jessie J
Self
Acting
Rihanna
Self
Acting
Justin Bieber
Self
Acting
Rebecca Black
Self (archive footage)
Acting
Alan Carr
Self (archive footage)
Acting
Lauren Christy
Self
Writing
Darren Criss
Aaron Christopherson (archive footage)
Acting
Ellen DeGeneres
Self (archive footage)
Acting
Graham Edwards
Self (archive footage)
Writing
Whoopi Goldberg
Self
Acting
Baz Halpin
Self
Production
Erica Hill
Self (archive footage)
Acting
Lucas Kerr
Self
Acting
Heidi Klum
Self (archive footage)
Acting
Avril Lavigne
Self
Acting
Bonnie McKee
Self
Acting
Alanis Morissette
Self (archive footage)
Acting
Dermot O'Leary
Self (archive footage)
Acting
Britney Spears
Self
Acting
Scott Spock
Self
Sound
Chris Wragge
Self (archive footage)
Acting
Russell Brand
Self
Acting