Based on The Body Artist, a2001 novella by Don DeLillo, the story follows Lauren Hartke, a performance artist who is grieving after her husband's suicide and keeps seeing a mysterious young man in the room upstairs who may or may not be real.
Weaver joins a cast that also includes Isabelle Huppert (Amour), Denis Lavant (Holy Motors), and David Cronenberg (Cosmopolis). Production on Body Art is due to begin in Portugal in the summer.
Weaver can next be seen in the comedy It Is What It Is with Olivia Thirlby and Evan Rachel Wood, and is then expected to start work on the sequel to James Cameron's Avatar.