Did the stars of "New Moon" decide on a fashion theme for the film's Los Angeles red-carpet premiere? Because all the "Twilight Saga" celebs donned their best vampy-glam looks on Monday night (November 16).

The movie's supporting cast certainly showed they have leading-man (or woman) style. The wolf pack's lone lady, Julia Jones, who plays Leah Clearwater in "Eclipse," looked absolutely stunning in a strapless dress by Norwegian designer Leila Hafzi. Justine Wachsberger, who plays Gianna in "New Moon," was in a very pretty strapless, green Issa dress with a Swarovski clutch. And Justin Chon, who plays Bella's classmate Eric, represented for the humans wearing a Dolce & Gabbana suit.

Director Chris Weitz wore a Tom Ford suit with a camo-green button-down. Edi Gathegi looked hip and chic in a gray, black and red Moschino suit. Speaking of cool, Nikki Reed looked comfy glam in a gray, bubble-hemline Burberry dress with Christian Louboutin heels.

Ashley Greene could stop traffic in her red, flowing Prabal Gurung gown, which required an extra person to help her walk the carpet. She was also wearing Brian Atwood shoes. Other showstoppers were Dakota Fanning looking grown-up (in a good way) in her lacy, strapless Valentino dress, as well as Kellan Lutz looking so adorable in an Armani suit.

Let's not forget the men and women who rock the "New Moon" soundtrack. Norwegian beauty Lykke Li wore a very sheer, black dress, vintage Jean-Paul Gaultier and an Opening Ceremony jacket. She said she was wearing "stripper shoes from a store in London." Death Cab for Cutie's Chris Walla brought his indie cred and a sense of style, keeping it fresh in an orange tie.

As if seeing the entire cast looking bold and beautiful on the carpet wasn't enough style for one night, their friends and family also stopped by to show their support. Taylor Lautner's "Valentine's Day" co-star Emma Roberts wore skinny jeans, a cute top and a sparkly jacket. Peter Facinelli's wife, Jennie Garth, looked lovely in a black, one-shoulder dress, and his "Can't Hardly Wait" co-star Jennifer Love Hewitt looked hot in a spandexy little black dress.

But the whole world could have stopped when the film's holy trinity — Robert Pattinson, Taylor Lautner and Kristen Stewart — finally graced the carpet. First up, let's talk about the boys. Lautner might only be 17, but his blue suit and skinny tie screamed old-Hollywood charm. Pattinson dazzled in his black, fitted Gucci suit. You can't really go wrong in Gucci. Finally, Stewart looked like a funky belle of the ball in her white, printed gown. She had her hair pulled back in a chic way and had her makeup done up in just the perfect rocker way.

Check out everything we've got on "The Twilight Saga: New Moon."

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