Look good for me? hahaha, nah, I think they are just trying to impress other girls and guys are just accessories to that list.
If you ask any normal guy, if the dress you have on looks good on you, he'll just say yes, go ask the same question to another girl and they'll probably say no or a disagreeing yes with the "I think her dress is hideous" behind your back with another girl.
I don't think women are trying as hard as they try for men. I'm pretty sure they're doing it to impress other women. No straight guy ever chose or turned down a girl because of her choice of a hand bag, ear rings or shoes.