Nick Harvey/WireImage

WHAT SHE WORE Palermo viewed the Valentino: Master of Couture exhibition in an embroidered Alessandra Rich halter gown, diamond earrings, a sparkling necklace, cuffed blazer, aubergine clutch and Manolo Blahnik pumps.

CELEBRITY: Olivia Palermo

TREND: Gowns

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Olivia Palermo

Olivia Palermo layered on the style at a Valentino event