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The Big Wedding is a 2013 American comedy film directed by Justin Zackham, written by Zackham and Adam Brooks, and starring Robert De Niro, Katherine Heigl, Diane Keaton, Robin Williams, Susan Sarandon, Ben Barnes, and Amanda Seyfried. It is about a divorced couple, Frank and Ellie, who get back together when their son decides to marry his girlfriend, and the son's biological father is invited to the wedding.