Check out the new red band trailer for Judd Apatow's Knocked Up follow-up, This is 40:

This is 40 Red Band Trailer

Paul Rudd (Anchorman) and Leslie Mann reprise their Knocked Up roles as Pete and Debbie, a married couple and parents of two who are dealing with growing older. Jason Segel, Charlyne Yi, and Tim Bagley also reprise their roles.

New to the cast is Albert Brooks, who plays Rudd's father, along with Megan Fox, John Lithgow, Chris O'Dowd (Bridesmaids), Lena Dunham, and Robert Smigel.

Apatow is calling This is 40 his most personal film to date. Fans of his can catch the film in theaters December 21.