Hilary Duff, the former tween sensation, is joining Gossip Girl for a multi-episode arc, sources confirm to EW.com's Ausiello Files exclusively.

The actress-designer-pop chanteuse will play Olivia Burke, a movie star who enrolls at NYU in search of a traditional college experience. She ends up rooming with Vanessa (Jessica Szohr).

Duff is scheduled to debut in this season's second episode, slated to air in September.

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It's been confirmed that JoAnna Garcia (from Privilege) will play Bree, a Miss America-like Southern belle whose progressive lifestyle belies her conservative roots.

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In honor of the Gossip Girl star's 22nd birthday, enjoy steamy photos of TV's hottest bad boy courtesy of PeopleStyleWatch.com

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Wanna check out some exclusive photos of Taylor Momsen's performance in Austin? There are some up now on SPINearth.tv(SPIN Magazine's new global music site). Check them out here.

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On Monday, September 14, the smash hit team that made The CW one of the top destinations for young women returns with a new twist: One Tree Hill will take over the 8:00-9:00 p.m. timeslot, while television's most buzzed-about series, Gossip Girl, moves to the 9:00-10:00 p.m. slot.

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