Nicole Richie attended the UNICEF Ball in a fierce Osman Fall 2011 gown.
The black gown with a leather bodice & cutouts was reminiscent of the Michael Kors dress, seen on Leighton Meester - (click here)
Nicole wore it with a messy updo, a cool earrings, kohl-rimmed eyes and a House of Harlow box-clutch.
Image Source: gossip-center.com
