Carrie Underwood rocked a Roberto Cavalli gown and a 381-carat diamond necklace at the Grammys in LA this afternoon. She's pulling double-duty at today's show as both a performer and a nominee. Carrie is in the running for best country song and best country solo performance for "Blown Away" off her record-breaking 2012 album. She's just one of many stars that have already arrived on the red carpet — make sure to vote on your favorite fashion and beauty moments in our polls!