Katy Perry performed her hit song "E.T." alongside Kanye West on last night's episode of American Idol. While her stage look wasn’t quite as dramatic as the fawn legs and alien-esque makeup she sports in the video for the single, Perry still brought some otherworldly style to the show via her towering headdress and space-age jumpsuit encrusted with 25,000 Swarovski crystals. The outfit was created by designer Yasemen Hussein and CuteCircut —the same folks behind the famous light-up gown she wore to last year's Met Gala. Click through the gallery to see more of Perry's intergalactic look, and view the video after the jump! Tell us, what do you think of her stage style?