The American Music Awards go down tonight in L.A. -- and, over the years, we've seen some horrible looks hit the red carpet.
Jessica Simpson once wore an entire pleather outfit, while former couple Britney Spears and Justin Timberlake did her one better by wearing His and Hers denim. And Ke$ha ... well ... she dressed like Ke$ha.
Check out some of the worst looks on the AMA red carpet!
