indieWIRE reports that IFC Films has bought Lynn Shelton‘s You Sister’s Sister. The film, which stars Emily Blunt, Rosemarie DeWitt, Mark Duplass and Mike Birbiglia, premiered this week at the Toronto International Film Festival.

The film follows Jack (Duplass), who still reeling over the death of his brother a year earlier, gets a suggestion from Iris (Blunt), his best friend and dead brother’s ex, that they take a trip to his father’s cabin to get his bearings. And there he’s unexpectedly confronted by Hannah (DeWitt), Iris’ sister.

IFC plans to release the film in 2012.

Read our interview with Lynn Shelton about the film.