Linda Cardellini

Linda Cardellini will be joining the cast of 'New Girl' as Jess's sister. (Amy Sussman / Invision/AP)

Linda Cardellini will soon be joining the cast of Fox's "New Girl" in a recurring role as Zooey Deschanel's character's sister.

Deschanel plays Jess, and Cardellini will play Abby, her sister, described by TV Guide as a troublemaker.

Cardellini, who most recently appeared on AMC's drama "Mad Men," will have a recurring role on "New Girl," though no word on exactly how many episodes she is expected to appear in.

Her first appearance will air in February.

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