I have to agree with you. I don't particularly like her all that much...
"Casanova" is not at all appealing...
But I just saw "Alfie" yesterday and she was great in it. She was given a lot of range to be sweet, sexy, and then crazy, psycho, and also vulnerable & sad....
I don't like the fact that she always seems to try too hard in terms of her wardrobe. The thing about Kate (YEAH, I'm comparing) is that she always looks effortless. Sienna realizes that she is being considered an "style-icon" and just goes way too far. However, I still enjoy looking at the pics and this thread.