I don't think it is. Obviously you wouldn't wear a t-shirt without a bra to a job interview on a cold day, but sometimes girls' nipples show even when they have on a bra. I'm not scandalized or offended by that. The whole idea of being offended by that is just strange to me. Nipples become erect sometimes and in different situations like when it's cold. It's what they do.
Vulgar and delicious. But I don't think people would think that. Just look at Jennifer Aniston on Friends. Or any show. God bless her, my past 13 year old self says. She loves showing her nipples through clothing. Or just doesn't care. No one is like "SATANIST!"
Sometimes I think it would be an issue and that depends on where they are being 'shown'. A young girl probably shouldn't have visible nipples through her clothing.
A woman in a professional setting (ie work) probably shouldn't have them showing but there's much more room for exceptions there like in adult environments, bars, casinos, etc.
As a guy if I see a woman's nipples showing through clothing I probably enjoy it, but might think it is kind of trashy depending on the situation/location and the rest of the woman's attire as well as the weather/temperature. There might be a vibe of 'look at me' which I generally find unappealing.
I don't believe it is. The rest of society however seems too uptight and has an unhealthy view of the human body. Their is nothing wrong with the human body. If anything it will be jealous women that will tear a woman down for her nipples showing as they desperately try to find a way to make themselves feel superior.
I think it is vulgar to a number of people depending on the setting you are in and what you're wearing/how you are portraying yourself and to others it may be a real turn on and some may not even think twice about it. Sometimes it's hard to control. Just a physiological response to cold.
Yes, sorry but if you do that, you do portray a certain image. If it's a white shirt, try a black bra underneath, or something. Very accepted in Europe. With see-through shirts, always try a bra that stands out completely or that you can't see at all (flesh-colored).