Starring Robert De Niro, Katherine Heigl, Diane Keaton, Amanda Seyfried, Topher Grace, Ben Barnes, Susan Sarandon, Robin Williams.
Directed by Justin Zackham.
Classification: MA15+ (Strong coarse language and sexual references), 89 mins.
Official Site: http://thebigweddingmovie.com.au/

Don Griffin (Robert De Niro) and Ellie Griffin (Diane Keaton) have been divorced for quite some time. When their adopted son decides to get married, his biological mother wants to come to the wedding.
The problem? She's Catholic and doesn't believe in divorce, so the two have to pretend to still be a couple.