PHOTOS BY CHRIS ASHFORD AND THEODORE WOOD

Now in its fourth day, the 67th Venice Film Festival is well under way. The competition, which is being judged by jury chaired by Quentin Tarantino, has already seen screenings of some of the year's most anticipated films, including Sofia Coppola's Somewhere, Robert Rodriguez's Machete, and Darren Aranofsky's Black Swan. Above, the respective stars of the latter two—Jessica Alba and Natalie Portman—attend their Venice premieres.