The Edie Sedgwick biopic, 'Factory Girl', starring Boho style-icon Sienna Miller, premiered yesterday (January 29, 2007) at the Zeigfeld Theater in New York City.

It should come as no surprise that the film's star, Ms. Miller, was the belle of the ball and our pick for best dressed, in her white vintage 1960s mini-dress covered in white tassels. Meanwhile, Mena Suvari sported a brand new brunette look, her drastic change emphasized by a bold cheetah-print trench coat!

Check out selected fashions from this star-studded event in our Factory Girl Premiere Photo Gallery!

Sienna Miller image ©2007 WireImage, licensed to About.com