Sienna Miller says Cate Blanchett will make a "better" Maid Marian.

The British star - who was initially lined up to appear in the forthcoming Ridley Scott blockbuster 'Robin Hood' - is not bitter about losing the part because she believes the 40-year-old actress is "more suitable".

"If they'd recast it with Keira Knightley, I'd have been heartbroken, but they've gone for something different - and better, in my opinion. If I had the choice between Cate Blanchett and me, I'd go for Cate Blanchett!"

Sienna also admitted she believes the public has a "vendetta" against her.

She explained to Total Film magazine: "There were several people supposed to be doing the film who no longer are, but because it's me it becomes this enormous drama. Is it a British thing? I don't know. I think it's a Sienna thing! There's just a vendetta against - I don't know."

Meanwhile, the 27-year-old beauty says she needs to be more vigilant with her movie role choices.

She said: "Films take two-and-a-half years to come out. I understand why I made them at the time but I'm absolutely not there now. I have to be more strategic in the choices I make."