Sienna Miller is the latest name to join the cast of Bennett Miller's Foxcatcher, Deadline reports. She'll join Steve Carell, Channing Tatum and Mark Ruffalo in the true drama.

The film is based on the 1996 murder of Olympic wrestler David Schultz by his friend, John du Pont, a paranoid schizophrenic who operated a Pennsylvania-based training facility called Team Foxcatcher.

Ruffalo will take on the Schultz role with Miller playing his wife, Carell starring as du Pont and Tatum as Schultz's younger broher, Mark.

Set to shoot this month, Foxcatcher marks Miller's followup film from last year's Oscar-nominated Moneyball. This one boasts a script from the Capote team of E. Max Frye and Dan Futterman.

(Photo Credit: Lia Toby / WENN.com)