Jon Kopaloff/FilmMagic

WHAT SHE WOREMeester vamped it up at the premiere of The Roommate in a leather-topped Michael Kors cutout gown, Harry Winston diamond studs and Brian Atwood heels.

WHY WE LOVE IT This is a sultry upgrade from Blair Waldorf's prim style! Sleek strands and smoky eyes added extra va-va-va-voom to Meester's smoldering look.
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Leighton Meester

Leighton Meester in Michael Kors

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