New Year's Eve features a ton of celebs, so it's no surprise that the flick's red carpet premiere in Los Angeles Monday night was packed with stars in gorgeous dresses.

Lea Michele, 25, opted for a nude embellished Valentino gown with a daring plunging neckline. She wore her hair in glossy side-swept waves and accessorized with Christian Louboutin shoes and Neil Lane jewels.

PHOTOS: See what all the stars wore last nightKatherine Heigl, 33, looked glamorous in a black lace strapless Dolce & Gabbana dress and jewels from Jacqueline Nerguizian.

Hilary Swank, 37, chose a sparkly midnight blue Elie Saab Couture dress with Christian Louboutin blue glitter heels and Neil Lane jewels.

PHOTOS: The best dresses of 2011

Fergie, 36, attended the premiere with hubby Josh Duhamel in a silver strapless Monique Lhuillier dress with Christian Louboutin heels and Tiffany & Co. diamond studs.

Sofia Vergara enhanced her killer curves in a bustier-style black dress. The Modern Family star, 39, accessorized with a bright red clutch and wore her hair in long, soft curls.

PHOTOS: Stars in sexy, skin-revealing dress

Watch the video above to see Ashton Kutcher, Zac Efron, Abigail Breslin and more stars!

Get more Us! Follow us on Twitter, Friend us on Facebook, Subscribe to Us Weekly