Sienna Miller will swap her Manolos for a bow and arrow as Maid Marian in Ridley Scott’s new Robin Hood movie.

“It’s happening. I just found out. It’s the most exciting news in the world,” the twenty-six year old star said of her latest film role, opposite Russell Crowe. “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,” Sienna beamed in a Tuesday afternoon interview with BBC.

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, the BBC reports.