BEST ACTRESS: MARION COTILLARD
La Vie en Rose
Age 32 Role Legendary French chanteuse Edith Piaf. Karaoke Dreamin' As a teenager in Orléans, France, Cotillard used to lip-synch to Madonna's ''Material Girl.'' ''With my microphone, I was the pop star of my bedroom!'' she laughs. That clowning turned out to be good practice for her uncanny performance in La Vie, which she approached with scientific precision: ''I took all the songs and I calculated the length of the notes, of the silences, and how she would breathe. Then I did it again and again and again.'' Up Next She sings — for real this time — in Rob Marshall's Nine, based on the Broadway musical adapted from Federico Fellini's 8 1/2. —Missy Schwartz