Parties! The style, stars and scoop from Hollywood's hottest events

After performing her latest single at the American Music Awards, Beyonce (in a Dolce & Gabbana dress and Brian Atwood heels) puts on her actress hat at the premiere of her latest film, Cadillac Records in Hollywood. The star, who portrays music legend Etta James, says she had a blast packing on a few extra pounds for the role: "Gaining it was the most fun thing in my life! I ate a lot of butter pecan ice cream."