Whose Side Are You On? Christina Aguilera vs. ...

From The Wanted to Kelly Osbourne, see who's hit a sour note with the singer


They've since admitted regret for calling Christina Aguilera names (and her fans let them have it on Twitter!), but the Brit boy band still was left unimpressed with her congeniality after their performance on The Voice. "She's a total b–," band member Tom Parker told a New York radio station. "She just sat there and didn't speak to us. Wouldn't even look at us." Added band mate Max George, "[She was] quite rude."