Exclusive: Britney's Harsh X Factor Judging

As next week's premiere of the new season of Simon Cowell's The X Factor fast approaches, we've got an exclusive sneak peek at Britney Spears showing her tough approach to judging.

VIDEO: Simon: New X Factor To Be 'More Controversial'

Britney drips with sarcasm when responding to a middle-aged X Factor hopeful who displays a bizarre backup dancer routine. "I want to know who let you onstage?" the singer asks. "I feel uncomfortable with you even staring at me." After the contestant takes several personal jabs at various judges, she then turns to the panel and asks, "Is he serious?"

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The X Factor debuts during a two-night premiere September 12-13 at 8 p.m. on FOX.