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Chloe Sevigny Joins ‘American Horror Story’ for Season 2

The "Big Love" Golden Globe winner will play a character named Shelly the Nymphomaniac

Ryan Murphy's sophomore season of "American Horror Story" may boil down to a battle at the insane asylum.

"Big Love" alum Chloe Sevigny will join the cast as a character who butts heads with a mental institution leader played by season returnee Jessica Lange, FX has confirmed to TheWrap.

GettySevigny will play Shelly the Nymphomaniac, a bitter rival of Lange, who won Golden Globe and Screen Actors Guild awards for her role as Constance Langdon on the show's first season but plays a new character in season two.

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"AHS" writers created the role of Shelly with Sevigny in mind, EW.com reports, and she'll be joined in the new season by previously announced cast members Lange, Zachary Quinto, "The Voice" judge and Maroon 5 lead singer Adam Levine, Sarah Paulson, Evan Peters, Lizzie Brocheré and Lily Rabe.

Murphy has said that season two, which begins production this summer, will be set in the East Coast asylum for the criminally insane.