grammy after party chateau marmont 30 seconds to mars Nicole Richie  joel madden

Well, the former Simple Life star did most of the dazzling, but no biggie!

Nicole Richie and Joel Madden attended the Grammy Awards after party at the Chateau Marmont last night, and the hot couple put on their Sunday evening best and mingled with stars like Jared Leto, Drake and Alessandra Ambrosio. Ahh, lifestyles of the rich and the famous...

Check out the gallery below to see the rest of the A-list attendees!