Arriving in theaters April 26 is writer-director Justin Zackham's The Big Wedding, a new comedy about a dysfunctional family struggling to get along. Robert De Niro and Diane Keaton play Don and Ellen Griffin, an estranged husband and wife who hope to mend their differences before their adopted son's (Topher Grace) big wedding ceremony. Take a look at these photos featuring Robert De Niro, Diane Keaton, Katherine Heigl as Lyla Griffin, Amanda Seyfried as Missy O'Connor, and Ben Barnes as Alejandro Griffin.

<i>The Big Wedding</i> Photo 1

<i>The Big Wedding</i> Photo 2

<i>The Big Wedding</i> Photo 3