I (Mr) don't really look for anything specific. A woman is attractive for many reasons, and it isn't just physical. A pretty face, a beautiful smile, a great laugh...all sexy. Yes, a hot body is wonderful, but not a deal breaker if the body isn't great. If a woman is willing to have a good time, doesn't bring drama, it's a fun time. Heck, there is no perfect body, and it is sad that women strive for something that doesn't exist.
I'd be willing to bet women are more judgmental about looks than guys are in the lifestyle (oh my, I'll be attacked for that comment).