Linda Cardellini Linda Cardellini

(New) Girl is about to go wild!

Freaks and Geeks alum Linda Cardellini will recur on the Fox comedy as Jess' wild-child sister, Abby, has confirmed.

As reported by, Jess' sibling is a troublemaker, and Jess (Zooey Deschanel) will have to bail her out of a big predicament. The actress starts filming later this week, and her first appearance will air in February.

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In addition to her series roles on Freaks and Geeks and ER, Cardellini is also known for her role on Mad Men this past season as Don's neighbor (and now-former mistress!) Sylvia, a role for which she earned an Emmy nomination.

New Girl airs Tuesdays at 9/8c on Fox. What do you think of the casting?