'X-Factor' Judge

REPLACED

by Pussycat Doll

5/25/2011 3:10 PM PDT BY TMZ STAFF
Huge shakeup at Simon Cowell's new show "X-Factor" -- TMZ has learned singer Cheryl Cole will no longer be a judge ... and will be replaced by ex-"Pussycat Dolls" member Nicole Scherzinger.

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It's unclear why Cheryl is out -- but we're told the replacement happened very recently.

Nicole was originally supposed to co-host the show with Steve Jones when it debuts in September -- but now, she'll be sitting on the judge's panel alongside Simon Cowell, Paula Abdul, and LA Reid.

Calls to Cowell's camp have not been returned.

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