Celebrities come out to play at WWD 100th Birthday Bash, including Mary-Kate and Ashley Olsen, Anna Wintour and Jessica Szohr,

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We love it when the fashion set come out to party, and party they sure did at last night's Women's Wear Daily 100th Anniversay Gala. The reason we like to see them shake their tail feathers? To see what they wear of course! All of fashion's big hitters were there; Marc Jacobs, Anna Wintour, Coco Rocha, Mary-Kate and Ashley Olsen, Diane von Furstenberg and Vera Wang to name a few. Even Gossip Girl Jessica Szohr managed to slap on a smile (well, sort of) for this big night out. Step through and take a peek fashion's A-team partying down.