Some American Idol fans are expressing discontent with Carrie Underwood on the show's judging panel, the latest blow to the show alum who is also being accused of "ruining" the show. Underwood, who recently surprised with a familiar dress on a recent episode,

Carrie Underwood’s involvement on American Idol has been heavily scrutinized, but her co-stars are already speaking up regarding the controversy.

A source shared how Katy Perry allegedly feels about returning to 'American Idol' -- and how she hasn't watched Carrie Underwood judge.