Katy Perry Live: Eight Outfits in One Song?!
Katy Perry changed costumes 15 times in Atlanta Tuesday night on the latest stop of her "Teenage Dream" tour. That's impressive enough for a night's work, but eight of them took place during the course of a single song!
Using a magic trick she first saw on America's Got Talent, Katy took the meaning of her own lyric, "You change your mind like a girl changes clothes," to a new level.