Michelle Williams dazzled on the red carpet at Venice Film Festival in a beaded floor-length Jason Wu gown and with her hair in a shining blonde pixie crop.
The Brokeback Mountain star looked a far cry from the dowdy, dark-haired 19th century woman she plays in new Western Meek's Cutoff, which tells the story of a group of women travelling along the Oregon Trail in search of a better life.
Director Kelly Reichardt, who has worked with Michelle before on 2009's Wendy And Lucy, said: "I love working with Michelle. She is very game for the kind of films we are making. They are really hard and there are no comforts at all."
Michelle plays Emily Tetherow in the film based on the true story of Stephen Meek, who led 200 wagons into the Oregon desert in 1845, claiming to know a shortcut through the Cascade Mountains, and ended up instead in an area without water.
The former Dawson's Creek star, who turns 30 on Thursday, attended the premiere at the film festival, but not the press conference.
She complimented her high-necked gown with Louboutin shoes, Cecilia bag, and Bulgari jewels.
Michelle has been left to raise her four-year-old daughter alone since the tragic death of her ex-fiance Heath Ledger in 2008.
Meek's Cutoff is one of 22 films, plus one surprise movie still to be announced, competing for the Golden Lion to be awarded September 11.