By peoplestylewatch
Updated April 06, 2011 10:00 PM

Charles Eshelman/FilmMagic

Michelle Williams may be known for her demure red carpet looks, but it turns out that she found a risqué perk to her most recent costumes. Williams and her costar Zoe Kazan admitted to keeping it quite breezy under their full prairie skirts while filming Meek’s Cutoff. “You can wear no underpants and just squat and pee and that’s really useful,” Kazan quipped to at the film’s New York City premiere. “It’s something that’s a luxury that’s only ever afforded to a man,” Williams explained. “I relished in that for a moment.” And though the dresses took some getting used to — “It felt like an ordeal to learn how to move in them and move in them comfortably,” says Williams — ultimately the actresses ended up enjoying them. “After a while, both Zoe and I came to miss them,” she admits. But not enough to bring them into her patented cool wardrobe. “We talked about it once the movie was over — if we could bring back prairie skirts or rock a bonnet. But so far, I haven’t seen either of us doing that,” says Williams. Read more from Williams at —Justine Harman

Courtesy Oscilloscope