Elizabeth Banks and Rachel Weisz are both set to star in the romantic comedy, Definitely, Maybe for Working Title and Universal Pictures.

Written and directed by Adam Brooks, the film centers on a soon-to-be-divorced political consultant who has to answer some hard questions from his 11-year-old daughter as he explains his promiscuous past. Ryan Reynolds, Derek Luke and Isla Fisher already have been cast. According to The Hollywood Reporter, Banks will play Reynolds' college sweetheart who dumps him for his brother, but the two reunite years later; Weisz will play a woman Reynolds dates after Banks.

Definitely, Maybe is still in development; a production schedule has not yet been set, however, a 2008 release date is on the calendar.

In separate news, Elizabeth Banks has signed on to the lead role in the comedy Joe Claus for Warner Bros. Pictures; the film also stars Vince Vaughn.