If you are headed to a Katy Perry performance, you know you are in store for several things: screaming tweens, more than a few radio hits, and, above all, some theatrical ensembles. While her contemporaries may stick to body-conscious jumpsuits and spangly mini-dresses, Perry has always been one for a costume when it comes to taking the stage. The singer is all for a theme, whether it be a pop-corn miniskirt for the premiere of her film Katy Perry: Part of Me or some literal fireworks when performing her hit "Firework." And there is always a kitsch factor—a light-up dress; a rainbow crop top; lots of wigs. Here, a look back at Perry's most insane on-stage ensembles.