Usually I sleep in the raw, especially in our tropical climate. However, on cruise ships, I wear a long tank top, as I always order room service first thing in the morning. When I answer the door to let the steward in, the tank does not quite cover my morning hardness, but I don't want to be totally exposed or scare off the guy coming in. Half the time, the different stewards would delay leaving by offering to set up the breakfast order while I'm standing next to them. And yes, a few have managed to brush up against me in the process, but ...