Nicole Richie joined a slew of celebs looking extra fierce in a black cutout Osman gown at the 2011 UNICEF ball in LA. Nicole's coal-rimmed eyes and soft updo added a Parisian-chic vibe, while our pick of black Christian Louboutin lace-up sandals matched her House of Harlow clutch perfectly. Shop a very similar Michael Kors frock to copy this sexy look.
Image Source: Getty
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