Just like men don't perform stupid drunk antics or drive at breakneck speeds for women.
Oh, we might really believe, superficially, that we are, but we're not. We are all doing these things to impress our own sex, not the other one. How many pretty girls do you know who are obsessed with their perceived fatness, even while their bewildered boyfriends tell them, quite honestly and sincerely, that they aren't fat and don't need to lose weight? How many men ask their girlfriends or wives what sort of car is most impressive (and please spare me the shit about women not knowing cars, I'm talking image here, not engine size and fuel efficiency), rather than their male friends?
Now as for unreal standards of beauty (female beauty, of course), there's truth here. I can tell you for absolute fact that most models - actually nearly all, including the celebrities - get airbrushed to hell. Fashion and porn. When you realise that women do fashion and dieting for other women, but porn is for men, you understand exactly why you get curvy women on the top shelf and thinner women on the monthly glossies. Different audiences.
I make too much sense to be on the Internet.