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

"That was so much fun!" declared Kate Hudson—in Dolce & Gabbana dress accessorized with a bangle by Frank Gehry for Tiffany & Co.—who took the stage after Chris Brown's spectacular performance, a rendition of Elvis' "Jailhouse Rock," complete with jailbirds and fireworks. Hudson helped count down the top movie music moments.