Watch Katy Perry & Kanye West Perform “E.T.” on ‘American Idol’

With all the special effects, it’s no wonder Katy Perry’s performance on American Idol featuring Kanye West was pre-taped. Katy transformed herself into an alien and performed her #1 hit song, “E.T” with Kanye on Thursday.The performance kicked off with Kanye on a video screen, but he later appeared in the flesh with Katy on stage.As for Katy, she made her appearance on stage by being carried by