I pretty much never wear bras. Year round I wear I camisoles for warmth which solves the nipple showing problem and have never felt the need.
However there is the odd occasion where having a teeny tiny bra to deal with nipple showage would be handy, when wearing a fitted dress for example.
I tried buying a size 8 triangle bra from Topshop that was quite pretty but made from spandex and polyamide and having that much manmade fibre next to my skin brought up sore red patches all over my boobs which was ungood.
The only company I can find doing non-wired cotton rich bras that come up small is American Apparel and I won't buy from them because the way they portray women in their marketing material makes me a bit sick in my mouth.
Anyone seen a cotton rich non-wired bra that does not look like a starter bra from M&S? I'll settle for a starter bra if I have to but it would be good to know I've explored all the options...