Now this is an interesting point. Women do tend to pay more attention to all the little things like, how your shoes match with your purse and.....well I don't know what else women look at when looking at each other... But anyway, those things usually just go over mens heads. Men just basically look at two things, how your ass looks and how your boobs look.
So I guess we can say when women dress "fashionably" they do it for other women. But when they want men to notice, then they make it a bit more obvious, show more cleavage, shorter tighter skirt....etc..