Forget about Sienna Miller nude for a moment. Come on, give it a try.

Instead, let's talk about the diet Jude Law's ex went through in order to shed a few pounds for her role in Factory Girl. We just caught the attention of Nicole Richie, didn't we?

Miller plays Andy Warhol muse Edie Sedgwick in the new film and had to slim her naturally svelte figure down even more to play the late junkie. How did she do it?

"I decided to drink vodka instead of wine because it has fewer calories," Sienna said.

Whoosh! Did you feel that gust of wind? It must've been Kate Bosworth sprinting out to the liquor store. We assume Kate Hudson will be joining her there shortly.

We always knew Sienna Miller was a role model for insanity. Who could've guessed she'd lead the vodka-related weight loss charge, as well?