I addressed the realism of her body. I didn't say her arms are representative of real arms but, in general, her torso is relatively similar to real life. Like I say, she has an ass, which most women do, not just a flat area. She has boobs, but they're not ridiculously huge like Lara Croft's. I've seen real women with real boobs that were bigger than Bayonetta's.
My point, which I probably should have explained, is that the media makes people want to go under the knife. To look at least a little like Bayonetta, all you have to do is work out, which is good for your health above anything else. She doesn't represent a female form that is COMPLETELY out of reach. The exaggerated limbs can really be ignored here, although it must be noted that she has muscle definition in her legs and arms, they aren't just skinny twigs attached in order to emphasis the "assets". In fact, unless Bayonetta's breasts are really emphasised in cut scenes or whatever, they're not particularly noticeable.
Also, if you haven't played the game, then how can you comment on the gameplay? Bayonetta's hair is a source of power. When she faces a "big boss", her natural hair gets longer and flows down her back. The more out of control her attacks become (read: aggressive), the less control she has over her hair, hence why it comes off to form demons. It's practicality, man!!