News Awards & Events Fashion Week NY Fashion Week's It Girl By InStyle Editors InStyle Editors Facebook Instagram Twitter Our editors and writers comprise decades of expertise across the beauty, fashion, lifestyle and wellness spaces in print and digital. We prioritize journalistic integrity, factual accuracy, and also having fun with every story we share. InStyle's editorial guidelines Updated on September 19, 2007 @ 11:24AM Pin Share Tweet Email Trending Videos Photo: Frazer Harrison/Getty NY Fashion Week's It Girl 01 of 10 Mischa Barton Gina James/Retna Barton wore an innocent white eyelet top with a fitted skirt to the Zac Posen show. 02 of 10 Mischa Barton John Parra/WireImage For the Anna Sui show, the former O.C. cast member wore a girlish Anna Sui pinafore with a Peter Pan collar. 03 of 10 Mischa Barton James Devaney/WireImage Barton headed to a party in a bright frock from Luella. 04 of 10 Mischa Barton Theo Wargo/WireImage The actress donned Matthew Williamson for a party at Saks Fifth Avenue. 05 of 10 Mischa Barton Gregory Pace/BEImages The fashion lover wore a Marchesa dress to the label's show. 06 of 10 Mischa Barton Andrew H. Walker/Getty Barton wore a glittering seventies-style maxi outfit to the Calvin Klein after-party. 07 of 10 Mischa Barton Humberto Carreno/Startraks Barton wore a fanciful chiffon Matthew Williamson minidress to the designer's show. 08 of 10 Mischa Barton James Devaney/WireImage The actress painted the town red in a leg-baring black-and-white minidress. 09 of 10 Mischa Barton Todd Williamson/FilmMagic Barton's short lace dress brightened up the front row of the Jenni Kayne show. 10 of 10 Mischa Barton Frazer Harrison/Getty The Keds spokeswoman wore a wild pair of the brand's flats to the Nanette Lepore show with a dress by (who else?) Nannette Lepore.