With an all-star cast led by Robert DeNiro (Meet the Fockers, Analyze That) , Katherine Heigl (27 Dresses), Diane Keaton (Morning Glory, Annie Hall), Amanda Seyfried (Mamma Mia) and Topher Grace (In Good Company), with Susan Sarandon (Shall We Dance) and Robin Williams (Good Will Hunting), THE BIG WEDDING is an uproarious romantic comedy about a charmingly modern family trying to survive a weekend wedding celebration that has the potential to become a full blown family fiasco.