I wear exactly the same nightgown as my wife. Well almost. My favorite has shorter sleeves. She calls mine a a nightshirt. I wore it when my daughter and grand daughter came to visit and I wore it when I visited friends. Nobody has ever even raised an eyebrow. Nighshirts or nightgowns for men may be a bit old fashioned but they are part of the culture. If I could find a nightcap that was cute I would wear that too for the full Winkle