Tina Fey and Amy Poehler have signed on to the comedy, Baby Mama for Universal Pictures.

Michael McCullers is writing the script; he'll also make his directorial debut on the film. According to Production Weekly, Fey plays Kate, a single and successful executive at Happy Planet (a Whole Foods-type grocery store) whose desire to have a child and keep her career leads her to hire a surrogate (Poehler).

Eight weeks of shooting begins April 30 in New York on Baby Mama.