Jon Hamm, Dianne Wiest, and Matt Lucas are in negotiations to join the cast of Universal's untitled bridesmaid comedy starring Kristen Wiig.  Production Weekly's tweet doesn't offer much more than that, but let us update you on what we already know.  First up, the project (which Wiig also co-wrote with Annie Mumolo) is being produced by Judd Apatow and Paul Feig (always a good sign) and Maya Rudolph is already on board to co-star.  The film is about two women battling to plan their friend’s wedding party.