Lifestyle Style Spring '10: Fashion's Night Out From the Olsens bartending to Posh signing T-shirts, see all the stars who turned out to support shopping in N.Y.C. By People Staff Published on September 11, 2009 04:00 PM Share Tweet Pin Email Trending Videos 01 of 18 ASHLEY & MARY-KATE OLSEN David X. Prutting/PatrickMcMullan/Sipa The actress-designers add another hyphen to their titles: bartenders! Mixing a concoction of pomegranate and vodka, a black-clad and served martinis to a crowd of fashion devotees at Bergdorf Goodman’s on Fashion’s Night Out. 02 of 18 VICTORIA BECKHAM Bill Davila/Startraks “It was great,” the told PEOPLE of her Fashion’s Night Out appearance at Bergdorf Goodman, adding, “It was really great!” Posing before throngs of awaiting fashion fans, Posh signed T-shirts while dazzling in a printed minidress and thigh-high Gucci boots.. 03 of 18 RIHANNA Marion Curtis/Startraks The brings her signature style to Fashion’s Night Out in a hooded dress, ankle booties and flashbulb-deflecting studded shades at Intermix. 04 of 18 CHARLIZE THERON Pacific Coast News Vogue’s current – and Dior muse – signs copies of the 584-page September issue at the design house’s Manhattan Flagship in a gray silk strapless dress by – who else? – Dior. 05 of 18 JUSTIN TIMBERLAKE & TRACE AYALA Frank Micelotta Courtesy Saks Fifth Avenue The William Rast and his co-founder are bringing plaid back at Fashion’s Night Out at their Saks Fifth Avenue pop-up store in N.Y.C. 06 of 18 KATE HUDSON Kent miller/Macy's Leaving A-Rod behind, the helped Anna Wintour and Michael Kors kick off the night at Macy’s in Queens in a checkered origami-pleated Michael Kors dress. 07 of 18 BLAKE LIVELY CMB / Splash News Online The Gossip Girl finds her preppy side in a tweed vest, embellished blouse and crocodile boots – all by Ralph Lauren – at the designer’s store in N.Y.C.’s West Village. 08 of 18 LINDSAY LOHAN Janet Mayer / Splash News Online Ungaro’s new artistic advisor brightens up Bloomingdale’s for Fashion’s Night Out in blue tie-dyed top, black hat and booties. 09 of 18 ANNA WINTOUR & SIENNA MILLER Richie Buxo / Splash News Online The Vogue editor and Hollywood style unite for fashion at the Intermix boutique in N.Y.C., with Anna rocking the night’s signature T-shirt while Sienna sticks to skinny jeans and a sheer-shoulder top. 10 of 18 MICHAEL KORS & DEBRA MESSING Seth Wenig/AP She must be in! Project Runway’s resident designer judge escorts the stylishly clad actress (in one of his dresses) down Macy’s Fashion’s Night Out red carpet in Manhattan to help launch his fragrance, appropriately named “Very Hollywood”. 11 of 18 SARAH JESSICA PARKER Darla Khazei/Pacific Coast News New York’s biggest style night of the year wouldn’t be complete without , who hit the Oscar de la Renta boutique in a pink silk skirt topped with a belted T-shirt in support of the evening. 12 of 18 TAYLOR MOMSEN Ken Babolocsay/Globe Who says pants are a wardrobe staple? The Gossip Girl eschews bottoms while performing with her band Pretty Reckless in the West Village as part of the Teen Vogue bloc party. 13 of 18 CAMILLA BELLE Courtesy Ralph Lauren For the Ralph Lauren Fashion’s Night Out celebration at the famed Rhinelander Mansion store on Madison Avenue, the actress slipped into a gray one-shoulder dress, spectator shoes and jewelry – all Ralph Lauren Collection. 14 of 18 KRISTIN CAVALLARI Neilson Barnard/Getty The Hills star brings her Laguna Beach style to N.Y.C. for Fashion’s Night Out in a yellow sheath at the D&G boutique. 15 of 18 EMMY ROSSUM Bill Davila/Startraks Joining stars like , and , Emmy sparkles at the Bergdorf Goodman event in a glittering one-shoulder dress. 16 of 18 ALEXA CHUNG Brian Ach/Getty The MTV host turns deejay to man the turntables at the Miu Miu celebration of Fashion’s Night Out in a puff-shoulder dress from the Italian brand. 17 of 18 MICHELLE TRACHTENBERG Sara Jaye Weiss/Startraks Gossip Girl’s stylish star heads to the boutique of New York design queen Diane Von Furstenberg for Fashion’s Night Out in a classic leopard wrap-dress by the designer. 18 of 18 MICHELLE MONAGHAN Greg Kessler Courtesy Calvin Klein Adding ’60s sparkle to the evening, the actress helped host the Calvin Klein Collection celebration in their Madison Avenue boutique in a silver dress from the line and black booties.