The red carpet was set ablaze last night for the 2010 American Music Awards in Los Angeles. Rihanna rocked the house with her thrilling opening performance. Usher, Ne-Yo, Nicki Minaj, Trey Songz, Willow Smith, Keri Hilson, and Diddy were there celebrating the best in music. See all of the fierce and fabulous fashion and red carpet glam now…