The 30-year-old "Jennifer's Body" has signed a deal with the show but will join the FOX series halfway, as she is currently expecting her third child with husband Brian Austin Green, reported Aceshowbiz.
The show that started on September 2, 2011, stars Zooey Deschanel, Jake Johnson, Max Greenfield and Lamorne Morris.
Fox first joined the series in its fifth season in place of its lead actress Deschanel, who took maternity leave from the show. But surprisingly fans welcomed the "Transformer" star making producers booked Fox for additional episodes later in the season.