Greg Kinnear (Little Miss Sunshine, Fast Food Nation) and Maura Tierney (Insomnia, Semi-Pro) have joined the cast of Universal Pictures' Baby Mama, written and directed by Michael McCullers, according to The Hollywood Reporter.

The two actors join Tina Fey, Amy Poehler, Sigourney Weaver and Dax Shepard in the comedy, which centers on a single woman (Fey) whose desire to have a child and keep her career leads her to hire a surrogate mother (Poehler).

Kinnear will play the male lead, a proprietor of a local fresh juice shop who becomes close with Fey's character as she begins her pursuit of a surrogate. Tierney will play Fey's confident, conventional sister who is the mother of two but supports her sister's choice.