Dimitrios Kambouris/Getty Images for Marie Claire

WHAT SHE WORE Olivia Wilde dined at a New York bash in a knee-length Monique Lhuillier number, turquoise Iwona Ludyga Design jewelry and strappy Jimmy Choo sandals.

WHY WE LOVE IT Hello spring! Nothing brightens up our day like a sunny yellow cocktail dress.
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Olivia Wilde

Olivia Wilde brightened up the room in Monique Lhuillier