Email a copy of "KEIRA WANTS TO BE SIENNA" to a friend.
Keira Knightley wants to be Sienna Miller.
The actress wishes she had the "amazing" social skills of Sienna, because she struggles to think of anything to say at showbiz parties and ends up "grinning aimlessly" at strangers.
Keira is quoted as saying: "At parties, I stand on my own, grinning aimlessly. I can never think of a thing to say. I...
