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: Kevin Winter/Getty; Steve Marcus/Reuters/Landov
Updated: Wednesday May 09, 2012 | 06:00 PM EDT By: Kiran Hefa
More from PEOPLE
- Sharon Osbourne Taking One-Month Break from The Talk After Collapsing
- Read the Cover Story – Tess Holliday: The World's First Size 22 Supermodel!
- Robert De Niro Gives Blunt, Funny, Inspiring Commencement Speech to Acting School Grads
- Chris Pratt Apologizes in Advance for Potential 'JurassicGate' and Misbehaving on Press Tour
- Kris Jenner Tries to Embarrass Daughters Kourtney and Kim Kardashian with a Throwback Pic of Their Model Poses