According to Debenhams, “There is a significant pattern in what women wear to bed and where they live, with Debenhams sales figures showing the further south you go the skimpier the night attire. It seems that ladies in the capital are the least covered up, with 73% of women opting to don underwear or simply go to bed in the nude. Whereas those in the north are completely covered up in long sleeved tops and matching pyjama bottoms.” We say, Onesies all round probably best.