class=”alignleft size-thumbnail wp-image-55922″ title=”Rosemarie DeWitt” src=”×150.jpg” alt=”” width=”220″ height=”150″ />Variety are reporting that Rosemarie DeWitt (Rachel Getting Married) has replaced Rachel Weisz (The Brothers Bloom) in Lynn Shelton’s new semi-improvised, and currently untitled, comedy project.

DeWitt will star opposite Emily Blunt (Sunshine Cleaning) and Mark Duplass (Humpday).

The untitled comedy will center on a man (Duplass) who comes between two sisters (Blunt and DeWitt).

It will be Shelton’s follow-up to the acclaimed bromance film Humpday, and will reunite her with producer Steven Schardt.

Production is expected to commence in Seattle later this month.