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 night

Katherine Heigl, 33, looked glamorous in a black lace strapless Dolce & Gabbana dress.

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

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 Jacqueline Nerguizian Fine Jewelry. She wore her hair in long, soft curls.

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