Cute long nightgown, the midriff is sheer lace. The straps look like they were cut and sewed back on. No tag, unfortunately. It fits like a small/medium, probably dress size 6, and definitely better suited for someone with a smaller bust. Feels like polyester, but that's just a guess. (Place I bought it from listed it as an from the 80s I have no clue though) Feel free to ask for any measurements.