NWT Garnet Hill Tee Shirt Midi Dress To be honest I think this dress could work as a regular dress or a nightgown. When I type in the numbers from the tag into google this exact one does not come up but sleepwear from GH does. It is lightweight and is not lined so, would probably need a slip if worn out. Made of organic cotton Has Short rolled cuffed sleeves, v neck and 2 side slits. New With Tags! Size Medium Bb2 t shirt, cotton, athleisure, night gown, sleep wear, spring, summer, cool, chevron, swim cover up