Sources connected with "American Idol" talks tell TMZ Kara DioGuardi judged her last party at "American Idol" - because she was fired from his job. We're told the show will return in a format 3-judge, and assuming that all transactions are completed, the panel of judges will consist of Randy Jackson, Jennifer Lopez and Steven Tyler. We are told that the only way Kara could get a respite is, if J-Lo thing falls apart - but we were told that the deed is done.