Katy Perry sat down with our iHeartRadio friend Mario Lopez, and he asked her about being a judge on the upcoming season of "American Idol".
She told him who her 2 choices are (you can fast forward to the 5:00 mark if you don't want to watch the whole thing!), and I was surprised to hear Tim McGraw was one of her choices! She also said she would love to work with her gal pal Rihanna.