I ask, because I'm not sure. It's probably a reflection on the fact that she's a good actress and takes her career so seriously as to do a wide range of roles, in many of which she's very unattractive. It's very hard for me to get any kind of handle on who she really is. Which I guess is a compliment to her acting ability.
In AEon Flux, she was indeed attractive, although that movie was vacuous superficial nonsense. (And immediately recognizable as filmed in Berlin and Potsdam to anyone who's lived there).
She's in possession of quite a pleasant posterior though.