Sources connected with the "American Idol" negotiations tell TMZ Kara DioGuardi has judged her last contestant on "American Idol" -- because she's been fired.
We're told the show will be going back to a three-judge format and assuming all deals are finalized, the judge's panel will consist of Randy Jackson, Jennifer Lopez and Steven Tyler.
We're told the only way Kara could get a reprieve is if the J-Lo deal falls apart -- but we're told that deal is done.
Ellen DeGeneres announced earlier Thursday that she was leaving the show after just one season.
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