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: Lewis Jacobs/NBC; Frederick M. Brown/Getty
Updated: Wednesday May 09, 2012 | 06:00 PM EDT By: Kiran Hefa
More from PEOPLE
- Bobbi Kristina Brown's Aunt: 'Justice Will Be Served'
- Read the Cover Story: Growing Up Kennedy!
Exclusive Family Photos from White House Nanny
- FROM EW: Channing Tatum Channels Madonna, Shows Off 7 Dance Moves in 30 Seconds
- Four Days Before Her Split from Ben Affleck, Jennifer Garner Was All Smiles on Solo Visit to Boston
- Miley Cyrus: 'My Life Is Insanely Serendipitous at the Moment'