Fashion's A-List: Met Gala's Best Dressed

Leighton, Rihanna, Justin, Victoria and so many more stars turn out in gorgeous gowns and jaw-dropping jewels for the "Model As Muse: Embodying Fashion" Costume Institute Gala at the Metropolitan Museum of Art. By Melissa Liebling-Goldberg

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MARY-KATE OLSEN

Ashley's sister takes a more old-fashioned approach in her off-the-shoulder, tiered lace Christian Lacroix Haute Couture gown, Fred Leighton jewels and pulled-back waves.