Sienna Miller and Keira Knightley

It was a case of life imitating art when Sienna Miller and Keira Knightley struck a friendship on the set of The Edge Of Love, written by Knightley's mum, Sharman Macdonald. In the film the duo play the lovers of legendary poet Dylan Thomas, but are surprisingly connected by a strong bond of amity. Keira has said of her pal: "I wish I was Sienna Miller. I watch that girl and she's just fabulous. She talks to everyone and laughs and smiles and looks as if she is genuinely enjoying herself. When I talk to her, I hope a bit of her party personality will rub off on me, but it never does. She could give master classes in being the most amazing party guest."

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