Charlie Hunnam has joined the cast of James Gray’s Lost City Of Z opposite Sienna Miller (American Sniper) and Robert Pattinson (the Twilight films). MICA Entertainment is financing the big-screen adaptation of David Grann’s bestseller. Brad Pitt, Dede Gardner and Jeremy Kleiner are producing via Plan B along with Dale Johnson and Anthony Katagas. Marc Butan is exec producing along with with MICA Entertainment’s Julie B, May and Glenn Murray. Sierra/Affinity is handling international sales at Berlin’s EFM, with CAA handling the domestic sale. Production is set to begin in the summer.