Sienna Miller is Maid Marian

Not only is Sienna Miller not wasting any time getting over her ex Rhys Ifans, she's busy scoring new movie roles. Sienna just signed on to play Maid Marian in an updated version of the Robin Hood classic called "Nottingham."

Sienna said, "It's the most exciting news in the world."

She will star alongside Russell Crowe, who will play the Sheriff of Nottingham. Who would you want to see play Robin Hood?