The movie is told from the perspective of the Sheriff of Nottingham
Actress Sienna Miller has confirmed she will play the role of Maid Marian in a film remake of Robin Hood.
The 26-year-old will star alongside Russell Crowe, who is expected to play the Sheriff of Nottingham.
Oscar-winning writer Brian Helgeland and director Sir Ridley Scott have also signed up for the project.
Speaking to the BBC's Colin Paterson, Miller said: "It's happening. I just found out. It's the most exciting news in the world."
She added: "It's ridiculous. But there's this looming actor's strike, so it's not 100% sure that it's going to be made, but it's looking pretty certain."
Miller, who is currently promoting her new film The Edge of Love, said she "could not have a better part" and working with Crowe and Ridley was "as good as it gets".
The movie is a twist on the classic story, with the Sheriff of Nottingham cast as a sympathetic figure up against a not-so-heroic Robin Hood.
Helgeland won an Oscar in 1997 for LA Confidential, which he co-wrote with Curtis Hanson.
The movie will also reunite Crowe and Ridley, who worked together on the 2000 movie Gladiator.
Crowe went on to win the best actor Oscar for his role as Maximus.