Jessica Biel will guest star in New Girl's fourth season.

According to The Hollywood Reporter, the actress will play Kat, "the hottest scientist in the world", and rival to Jess (Zooey Deschanel).

In the episode, the loft gang attend a wedding, and Jess sets her sights on a cute guest, only to have to vie for his attention with Kat.

Biel's appearance in New Girl will mark the actress's first small screen role in nearly eight years.

She famously starred in 7th Heaven for the first seven seasons before leaving in 2003, and returning for the series finale in 2006.

Biel can next be seen on the big screen in Shiva and May.

New Girl returns to Fox on September 16.