Why is it that girls are confortable wearing skimpy bikinis, thigh clothing, and raveling dresses.?

And .. ALL BIKINIS AND SWIMSUITS ARE SKIMPY .. even the one peices are too skimpy ..!!! ..If you cant wear it in church than dont wear it..lol..lol..lol. .. Okay . so i sound like prude.. but i am really not.. i just want to know.. why are women confortable showing so much skin in places, and really leaving nothing to the imagination .. is it just femenine vanity and wanting to show off... .. ? just trying to understand how women feel about displaying their bodies in such ways, and were is the cut off point.. at what point does it just become wrong to show too much skin .. ? topless beach . nude beach .. lol.. tight spandex.. lol. i mean .... spandex shows everything... but just not skin.. ?? can someone please explain this female logic to me.. ?