American Idol stars Carrie Underwood and Chris Daughtry were both triple threats at the American Music Awards in Los Angeles on Sunday (18Nov07). Underwood claimed Country Female Artist, Favourite Artist and Country Album honours, while Daughtry's self-named rock act picked up Breakthrrough Artist, Adult Contemporary Artist and Best Pop/Rock Album. Meanwhile, Justin Timberlake was a double winner and it was also a big night for Beyonce, who became the first female to claim the AMA's International Artist accolade. Only five other artists have claimed the rare prize - Michael Jackson, the Bee Gees, Rod Stewart, Aerosmith and Led Zeppelin. The full list of winners is: Breakthrough Artist - Daughtry Country Band/Duo/Group - Rascal Flatts R+B Male Artist - Akon Pop/Rock Male Artist - Justin Timberlake Soundtrack Album - High School Musical 2 Country Female Artist - Carrie Underwood Adult Contemporary Artist - Daughtry Soul R+B Album - FutureSex/LoveSounds by Justin Timberlake T-Mobile Text-In Award for Favourite Artist - Carrie Underwood Best Pop/Rock Album - Daughtry by Daughtry Country Album - Some Hearts by Carrie Underwood Hip-Hop Band/Duo/Group - Bone, Thugs-N-Harmony International Artist Award - Beyonce Soul/R+B Female Artist - Rihanna Pop/Rock Female Artist - Fergie