It's Mr. Worldwide! US rapper Pitbull was the host of this year's show in LA This image appears in the gallery:American Music Awards 2014: The 45 MUST-SEE Pictures Feat. One Direction, 5SOS & Taylor Swift #AMAs 9. It's Mr. Worldwide! US rapper Pitbull was the host of this year's show in LA (Picture: Getty) 45 images See the full gallery: American Music Awards 2014: The 45 MUST-SEE Pictures Feat. One Direction, 5SOS & Taylor Swift #AMAs