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WHAT SHE WORE The Gossip Girl lead sported head-to-toe Derek Lam for the designer's Spring 2011 show.

WHY WE LOVE IT This is the way to wear white after Labor Day! Leighton Meester looked totally cool while staying warm in edgy snow-white asymmetrical knits. Her tough-girl finishing touches included lace-up boots and chunky silver bracelets.
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Leighton Meester

Leighton Meester in Derek Lam