Hilary Duff Joining Gossip Girl

Attention Upper East Siders! Hilary Duff is joining the cast of Gossip Girl!

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The actress will join the series for a multi-episode story arc this fall, the CW confirms to Usmagazine.com.

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Duff, 21, will play a movie star named Olivia Burke who enrolls at NYU in search of a traditional, out-of-the-spotlight college experience. She will be roommates with Vanessa (played by Jessica Szohr).

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Duff will first appear on the hit CW show during next season's fourth episode, scheduled to air Oct. 5. Entertainment Weekly first reported the news.