The music industry's biggest stars got glamorous to hit the red carpet for the Grammy Awards in LA tonight. Justin Timberlake looked dapper in his suit and tie, while Beyoncé Knowles stepped out in a black-and-white Osman by Osman Yousefzada pantsuit. Rihanna stunned in a bold red Azzedine Alaïa gown, and Taylor Swift went with a white J. Mendel number. Click through to see who else stepped out for the star-studded show — and what they wore! Plus, be sure to vote for your favorite looks from tonight in our Bella and Fab polls.