'The X Factor Season 3' Judges Redcarpet - Demi Lovato, Simon Cowell, Paulina Rubio

Demi Lovato and Simon Cowell - Funniest moments on The X Factor - Season 3 (6/8) LEGENDADO

Paulina Rubio - Boys Will Be Boys (The X-Factor USA 2013)

Simon Cowell, La Reid, Britney Spears and Demi Lovato get Handprints at Chinese Theater

Wilmer Valderrama and Demi Lovato through the years.

RAW INTERVIEW: The X Factor Season Three Judges in Charleston

Slash feat. Demi Lovato - "Papa Was A Rolling Stone" (Official Video)

Demi Lovato, One Direction, Simon Cowell and More at THE X FACTOR FINALE!

Simon Cowell & Demi Lovato Find Each Other Very Annoying | CONAN on TBS

Demi Lovato & Simon Cowell - Uncover (Dimon)

Simon Cowell & Mel B Moments

Demi Lovato and Simon Cowell - Funniest moments on The X Factor - Season 3 (8/8) LEGENDADO

X-Factor: Demi Lovato, Kelly Rowland & Paulina Rubio Interview

Demi Lovato & Simon Cowell | Funny Moments [part 5/5]

Demi Lovato and Simon Cowell at the Fox Upfronts in NYC

Demi Lovato & Simon Cowell - Komik anlar (Türkçe Altyazılı)

LA ENTREVISTA CON PAULINA RUBIO

Demi Lovato and Simon Cowell - Funniest moments on The X Factor - Season 3 (4/8) LEGENDADO

Demi Lovato and Simon Cowell X Factor Funny Moments Part 1

Demi Lovato on Ellen 09-20-2011 [Full Interview]

BRITNEY SPEARS Best Moments On The X Factor!