Shadow line vintage nylon slip with lace size 36

gorgeous nylon slip, vintage great condition, only sign of age is lace is a slightly different color now than the nylon. Not by a lot though. adjustable straps. If you don't know your vintage slip size, I would say this would fit a medium nicely Or a small if you have a larger bust. I think the size might refer to the inches around your bust?? (size 36) measurements in photos