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WHAT SHE WORE The busy actress perused the latest Tiffany & Co. eyewear collection at the label's Fifth Avenue store in an Elie Saab dress, mesh Louboutin heels and a necklace from the legendary jeweler.

WHY WE LOVE IT Who could wear this dress better than Blake Lively? Edgy and ethereal, the peek-a-boo tulle and lace design subtly revealed the Gossip Girl star's flawless body.
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Blake Lively

Blake Lively in Elie Saab