Fashion's Night Out

Isaac Mizrahi belted out a cabaret selection for the crowd at Bergdorf Goodman on Fashion's Night Out.

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Mary-Kate and Ashley Olsen bartended at Barneys early in the night. One confused shopper reportedly left a tip for the twins-- before realizing who had served his drink.

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Jonathan Adler jumped behind the potter's wheel at Barneys to throw pots for adoring fans.

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Oscar de la Renta, Barbara Walters and Sarah Jessica Parker led the crowd in a massive sing-a-long at de la Renta's Madison Avenue store.

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Rihanna, dressed in a hooded dress and studded sunglasses, caused hysteria during her five-minute lap around Intermix's SoHo store.

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Gwen Stefani stopped by Bloomingdale's in New York.

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Anna Wintour and Gwen Stefani greeted fans at Bloomingdale's -- before Anna jetted off to the next event.

Jerritt Clark/Getty Images for Bloomingdale's

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Lindsay Lohan took a minute to shop on Thursday night -- from her own line, of course. Lohan posed with leggings from her 6126 line at Bloomingdale's.

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Diane von Furstenberg and Tracy Anderson lead crowds in a massive dance party at von Furstenberg's downtown store.

Sara Jaye Weiss

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Diane von Furstenberg and Kate Hudson traveled to the Queens Center Mall to cut the ribbon for Fashion's Night Out in Macy's.

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Model Daria Werbowy puckered up at the Sunglass Hut & Vogue Eyewear party.

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Designer Michael Kors and actress Debra Messing walk through the streets on a red carpet.

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Taylor Momsen may be the single reason traffic in lower Manhattan was at a standstill on Thursday night: she performed with her band, the Pretty Reckless, in the middle of Perry Street for Teen Vogue Fashion's Night Out Fashion Show.

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Erin O'Connor and Sarah Brown attended a drinks reception hosted by Vogue & Burberry to celebrate Fashion's Night Out in London.

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Designer Narciso Rodriguez signed a Fashion's Night Out t-shirt at Bergdorf Goodman in New York.

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Eva Herzigova attended Vogue's Fashion's Night Out party at the Dolce & Gabbana boutique in Milan.

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Designer Manolo Blahnik held court at Bergdorf in New York.

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Samantha Cameron, wife of Conservative Party leader David Cameron, lit up the room at Vogue and Burberry's cocktail reception in London.

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Victoria Beckham signs a limited edition Fashion's Night Out t-shirt at Bergdorf Goodman in New York.

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Brit it-girl Pixie Geldof rushes into the Burberry party in London.

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Letizia Moratti, Giorgio Armani, and Franca Sozzani (Editor-in-Chief of Italian Vogue) attended the Vogue party in Milan.

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Designer Donna Karan attended the Saks Fifth Avenue celebration of Fashion's Night Out in New York.

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Natalia Vodianova and Claudia Schiffer perused the racks at Burberry's store in New York.

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Cosmetics heiress Aerin Lauder attended the party at Saks.

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Actress Charlize Theron Dior looked radiant as she signed autographs of her Vogue September issue at the Dior store in New York.

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Fashion's Night Out

On Fashion’s Night Out, The Daily Beast drinks cocktails with Mary Kate and Ashley, plays polo with Ralph, and sings arias with Oscar de la Renta. VIEW OUR GALLERY.