All of Katy Perry's 2018 'American Idol' Looks

12 View Slideshow ⟶
Katy Perry for American Idol
Craig Sjodin/ABC

If anyone knows how to take a theme to 100, it's Katy Perry! And she certainly pulled out all the stops for her first season as a judge on the new ABC iteration of American Idol. Click through the gallery to see all of her looks from her competition show debut.