Milla! But I'm won't watch REII, it had so shitty trailer. REI was very entertaining, the lobby scene with lasers is a classic.
About Kate... Carrie-Anne in Matrix also had leather outfit, but she was too manly - Kate looks better. Maybe that's the reason why Carrie-Anne wasn't in the poll at all. But somehow leather is not my thing... yes, I the girl to be almost naked! And Milla does that best.