Jessica Biel 'New Girl'
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Jessica Biel is heading back to TV for “New Girl.”

The actress will guest star in the season four premiere of the Fox comedy, Variety has confirmed. It will premiere on Sept. 16. Biel’s currently only booked for one episode.

Biel will play Kat, “the hottest scientist in the world.” She’ll compete with Jess (Zooey Deschanel) when they both eye the same cute guy at a wedding.

Biel rose to stardom on TV, starring in the first seven seasons of “7th Heaven,” but has focused on film in recent years. She can next be seen in “Shiva and May.”

Production on season four of “New Girl” begins on Aug. 4. Biel is repped by CAA.

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