Baz Luhrmann casts 18-year-old Isla Johnston as Joan of Arc in new biopicBaz Luhrmann has cast an 18-year-old actor named Isla Johnston to take on the leading role of Joan of Arc in his new biopic of the saint. However, having now been selected to lead the cast in the Oscar-winning filmmaker’s adaptation of the life story of Joan of Arc, the role is bound to propel Johnston to a new height of stardom. Subsequently, her actions allowed the French monarchy to gain back control from the English in 1429, without which the country would not be its own independent nation today. Luhrmann said: “If that happened, we’d all be eating English sarnies in France,” before joking, “There’d be no more baguettes. Can you imagine that devastating reality?”Details on further casting, title, and a release date for Luhrmann’s Joan of Arc biopic have not yet been revealed, although it is expected to begin filming in 2026.