Stacie McChesney/NBC/NBCU Photo Bank

WHAT SHE WORE Emma Stone stepped out on The Tonight Show with Jay Leno's stage in a leather Monique Lhuillier dress, cap-toe Louboutins and gems from Sydney Evan Jewels.

WHY WE LOVE IT The red hot star owned the room in an eye-popping monochromatic ensemble.
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Emma Stone

Emma Stone in Monique Lhuillier