And the reality is that they do it to try to look better to other women. How confusing to be a teenage boy trying to learn about life: the girls will show off their breasts and legs and butts, but if you say anything to them about it or look too long you are being creepy or guilty of sexual harassment. I guess it is confusing for all men, no matter what age.
I go ahead and look if they are flaunting it, and not shy about it.
Don't like it, then don't flaunt it.