Hollywood Fashionistas Unite
Scarlett Johansson's new dark do for her upcoming role in "The Nanny Diaries" really turned heads. And Scarlett's co-star, Alicia Keys, was just one of the beauties dazzling in diamonds. But the women weren't the only ones shining Monday night.

"My outfit matches my underwear, so everybody wins," joked the show's host, "Entourage" star Jeremy Piven, who looked cool in black Calvin Klein.

A trim Terrence Howard sported Dolce and Gabbana, Sean "Diddy" Combs literally dressed himself, and designer Tommy Hilfiger sported a Guns ‘N Roses shirt, making fun of his recent headline grabbing bar brawl with the band's lead singer, Axl Rose.