disclaimer: i'm going to be referring to human nature and psychology on a macro level. i'm not a psychic and i'm not delving the secrets of humanity out of anybody's brain, for all i know SH is the one human in the history of the planet earth who grew up in a bubble and never experienced cultural factors and is a pristine android immune to social influence.
barring that, my responses are predicated on the reality of human social engineering and the psychological motivations behind many of our actions due to us evolving as social animals.
because you do.
(or, to please women, in the case of lesbians)
yes you do.
Most of us dress to please ourselves, regardless if we wear high heels, dresses, or skinny jeans like I do. In fact, despite the fact that my husband is constantly telling me things like, "you look mighty sexy in those jeans, babe", I'd dress the same way if I was single and never left the house. I dress to please myself. I like the way I look and I really don't give a shit if anyone else likes or dislikes my style.
and *why* exactly do you do that?
i've seen women doll themselves up a hundred times and then claim they're doing it for themselves, and every excuse i've ever heard was a shallow attempt to justify it being some personal choice.
if you like how you look, it's because you perceive how you look being desirable to your preferred potential mate type.
if dressing 'sexy' makes you feel confident, your confidence is in feeling like men are looking at you and liking it.
this is all true of men too btw, i'm not just slagging on women - *everyone* dresses in a way that they feel signals to their preferred mate type. nobody dresses "just for them" like they live in some vacuum where the gaze of others isn't a factor.
you know who "dresses for themselves"? the people at walmart you occasionally see a picture of where a shirtless old woman has her tits tucked into the top of her sweat pants.
anyone who puts even a modicum of attention into their fashion is doing so to display to potential mates.