Canadian singer Justin Bieber holds his awards for Favorite Breakthrough Artist, Favorite Pop/Rock Male Artist, Favorite Artist of the Year and Favorite Pop/Rock Album at the 38th Annual American Music Awards in Los Angeles, California, USA, 21 November 2010. EPA/MIKE NELSON
US singer Usher holds his awards for Favorite Soul/R&B Album and Favorite Soul/R&B Male Artist at the 38th Annual American Music Awards in Los Angeles, California, USA, 21 November 2010. EPA/MIKE NELSONepa US singer Usher holds his awards for Favorite Soul/R&B Album and Favorite Soul/R&B Male Artist at the 38th Annual American Music Awards in Los Angeles, California, USA, 21 November 2010. EPA/MIKE NELSON
US singer Usher (L) and Canadian singer Justin Bieber (R) pose in the press room with their awards at the 38th Annual American Music Awards in Los Angeles, California, USA, 21 November 2010. Usher won awards for Favorite Soul/R&B Album and Favorite Soul/R&B Male Artist. Bieber won awards for Favorite Breakthrough Artist, Favorite Pop/Rock Male Artist, Favorite Artist of the Year and Favorite Pop/Rock Album. EPA/MIKE NELSONepa US singer Usher (L) and Canadian singer Justin Bieber (R) pose in the press room with their awards at the 38th Annual American Music Awards in Los Angeles, California, USA, 21 November 2010. Usher won awards for Favorite Soul/R&B Album and Favorite Soul/R&B Male Artist. Bieber won awards for Favorite Breakthrough Artist, Favorite Pop/Rock Male Artist, Favorite Artist of the Year and Favorite Pop/Rock Album. EPA/MIKE NELSON
US singer Usher (L) and Canadian singer Justin Bieber (R) pose in the press room with their awards at the 38th Annual American Music Awards in Los Angeles, California, USA, 21 November 2010. Usher won awards for Favorite Soul/R&B Album and Favorite Soul/R&B Male Artist. Bieber won awards for Favorite Breakthrough Artist, Favorite Pop/Rock Male Artist, Favorite Artist of the Year and Favorite Pop/Rock Album. EPA/MIKE NELSONepa US singer Usher (L) and Canadian singer Justin Bieber (R) pose in the press room with their awards at the 38th Annual American Music Awards in Los Angeles, California, USA, 21 November 2010. Usher won awards for Favorite Soul/R&B Album and Favorite Soul/R&B Male Artist. Bieber won awards for Favorite Breakthrough Artist, Favorite Pop/Rock Male Artist, Favorite Artist of the Year and Favorite Pop/Rock Album. EPA/MIKE NELSON
Canadian singer Michael Buble holds his award for Favorite Adult Contemporary Music Artist at the 38th Annual American Music Awards in Los Angeles, California, USA, 21 November 2010. EPA/MIKE NELSON
US band Muse holds their award for Favorite Alternative Rock Music Artist at the 38th Annual American Music Awards in Los Angeles, California, USA, 21 November 2010. EPA/MIKE NELSON
US singer Taylor Swift holds her award for Favorite Female Country Artist at the 38th Annual American Music Awards in Los Angeles, California, USA, USA, 21 November 2010. EPA/MIKE NELSON
Canadian singer Michael Buble holds his award for Favorite Adult Contemporary Music Artist at the 38th Annual American Music Awards in Los Angeles, California, USA, 21 November 2010. EPA/MIKE NELSON
Canadian singer Michael Buble kisses his award for Favorite Adult Contemporary Music Artist at the 38th Annual American Music Awards in Los Angeles, California, USA, 21 November 2010. EPA/MIKE NELSON
US singer Taylor Swift holds her award for Favorite Female Country Artist at the 38th Annual American Music Awards in Los Angeles, California, USA, USA, 21 November 2010. EPA/MIKE NELSON
US rapper and show performer Pitbull poses in the press room at the 38th Annual American Music Awards in Los Angeles, California, USA, 21 November 2010. EPA/MIKE NELSON
US singer Brad Paisley holds his award for Favorite Country Male Artist at the 38th Annual American Music Awards in Los Angeles, California, USA, 21 November 2010. EPA/MIKE NELSON