Photo SpecialWhose Side Are You On? Christina Aguilera vs. ...
From The Wanted to Kelly Osbourne, see who's hit a sour note with the singer
Credit: Amanda Schwab/Startraks; Inset: NBC
Updated: Wednesday May 09, 2012 | 06:00 PM EDT By: Kiran Hefa
More from PEOPLE
- FROM EW: 10 Patriotic Movies to Watch over July 4th Weekend
- Read the Cover Story: Growing Up Kennedy!
Exclusive Family Photos from White House Nanny
- 20 American Flag-Themed Foods for Your Fourth of July Party
- Teacher Who Had Sex with 3 Students Gets 22 Years Despite Tearful Apology
- Do Stripper Conventions Really Exist? And More Burning Questions from Magic Mike XXL