The <b>denim shirt</b> has become an essential in the male wardrobe, looking equally as desirable on women too. <a href="http://www.selfridges.com/GB/en/cat/The-Kooples/womens" style="text-decoration: none"><font color="black"><b>The Kooples</b></font></a> use real couples in the campaigns, and with its hidden popper placket and minimal detail, this understated essential could understandably disrupt some relationships.