Day-to-Night Makeover Masters

What a difference a day makes! See how Katherine Heigl, Jessica Alba and more switch up their looks in a matter of minutes

ROONEY MARA

The Girl with the Dragon Tattoo star chooses a fiercely edgy leather cutout mini at the film's Rome photo call, later switching to a Valentino gown that features the same darkly stylish sensibility without being quite so literal.