Check out this really cool sister act from South Africa. They are called The Soap Girls and they are play a mixture of punk, riot grrrl and grunge.
One of them Camille is a nudist and a straight edger (no cigarettes, alcohol, drugs, gambling, sexual promiscuity or eating processed foods) and she often performs topless on stage, sometimes with gaffa tape on her nipples. I've plugged them on the YNA FB group as well as a few other nudist groups on FB and they've been met with largely positive responses.
http://www.thesoapgirls.com They communicate very closely with their fans and followers and responded to a few of my messages before. :)