Nightdress is typically synonymous with nightgown and both terms refer to sleeping wear for women that take the form of simple to complex dresses. Hot Elegant Red Rose White Nightdress Models Other terms that have been used in place of nightdress include peignoir and negligee, though these terms often reference fancier nightdresses that might be worn for seductive rather than sleeping purposes. Contrasted to nightgown is the term nightshirt, which is often a straight long gown worn by men, though many women enjoy wearing nightshirts too. debbie white nightie white okha dress Significant variety exists in what may be deemed a nightdress. Anything from heavy flannel flowing gowns that are floor length to skimpy polyester or silk gowns might qualify. The unifying factor tends to be that these are most often worn to bed, which has not always been a common practice. For women a nightdress has the advantage of adding a bit more modesty, if getting up in the middle of the nig...