For some men it's exciting to see a woman's sex highlighted under clothes, just as for some women it's exciting to see the shape of a man's c*** thru his pants. Some men like to see the areola and nipples, some like to see the lips.
Personally, it's not my thing, I would not go out in clothes that emphasized, and even in workout spandex mine doesn't show, but I have seen some women who are a bit more obvious. However, it's a little different when a girl tucks it in and around her lips for a picture....to each his own...:smile: