Works of art using the nipple or breast (in an unusual way, outside the standard nude or erotic context)

Works of art using the nipple or breast (in an unusual way, outside the standard nude or erotic context) :
 * Womanhouse installation: Robin Weltsch’s Kitchen and Vicki Hodgetts’s Eggs to Breasts (1972)
 * Robert Gober, http://4.bp.blogspot.com/_qTCLbJzb2QQ/Sb0APQRHJEI/AAAAAAAAAPI/1CnVp7LfKSc/s400/c.jpg
 * Janine Antoni, Wean (1989-90), 2038 (2000)
 * Nicola Costantino, Nipple Hermes handbags, Birkin and Kelly (2006)