Sienna Miller, who starred in Factory Girl, is what female Warhol worshippers aspire to be. She's a muse for top designers and can effortlessly pull off thrift store fashions. But personal style isn't just what makes her a poster girl of the culture. She's currently dating perpetually disheveled actor Tom Sturridge, who's starring in the film adaptation of the hipster bible, Jack Kerouac's On the Road.