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Answers: She was Jude Law's boyfriend.

You should care about her because she made a movie with Keira Knightley (staring in Pirate of Caribbean). I think it's Atonement (but not sure).
And she's pretty but I guess it doesn't matter. I don't know and i don't care. Someone who is famous for dating Jude Law. She has average acting skills. Nothing really exceptional. She's an actress. She was in "Factory Girl" playing Edie Sedgewich, which was supposed to be her break out role but didn't do too well.

She was in Alfi, and a some other films. From what I hear, she's really hard to work with. shes part of this new pathetic celeb culture the press has forced on us. Shes a bit of a second rate actress famous mainly for Jude Law cheating on her. Usual sterotype blonde celeb......boring.. dont waste your time bothering to care about any of them. Ex main sqeeze of Jude Law. Her appearance is somewhat on the unforgettable side, her acting ability is average to good. she's an actress.. This should explain who she is.http://en.wikipedia.org/wiki/Sienna_Mill...

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