Meryl Streep and Julia Roberts star in Jean Doumanian/ Smokehouse Production’s family drama, which is set to begin shooting on Sept 24.

August: Osage Country is based on the play by Tracy Letts about strong-willed female relatives who converge after a family crisis. John Wells directs.

McGregor, earning strong notices for his performance in Toronto entry The Impossible, will portray the son-in-law to a pill-popping matriarch to be played by Streep.

The Weinstein Company holds domestic rights and closed key territories in Cannes.