It's Fashion Week in Paris, and the City of Lights has attracted the world's most famous designers, as well as some of Hollywood's brightest stars, like Jessica Chastain (pictured above). Along with Chastain, quite a few celebrities showed up to last night's Givenchy fashion show. See what they wore below.

Les Miserables star Amanda Seyfried poses in a half-sleeveless black number with diagonal patterns.

Nicole Richie keeps it simple in black and white too.

Click here for more celebrities from Paris Fashion Week.