Darren Aronofsky’s ballet psychological thriller will open the 67th Venice International Film Festival on September 1. Natalie Portman stars as a ballerina who finds herself locked in a web of competitive intrigue with new rival Mila Kunis. Vincent Cassel, Barbara Hershey and Winona Ryder also star in the Fox Searchlight release. Aronofsky won the Golden Lion two years ago for The Wrestler. This year’s Venice – reckoned to be one of the top three festivals in the world with Cannes and Berlin – runs from September 1-11.