Vintage 70's long nightgown, no tags, seems like a size M, all nylon. Nightgown has halter style top, double straps with bow decor, nightgown is light blue, has brown straps with contrasting brown stripe around the bottom. Nightgown is in great condition, measurements are

bust up to 36"
waist up to 28"
hips 24" across laid flat
length 54.5"