Kate Spade Dream a Little Dream Bling Nightgown - No size tag!

This cute night gown from Late Spade is in great preloved condition but it is missing the size tags and care/material tag I believe it falls in line with a small…BUT - Please see measurements below! Black with bling on the front It is a silky material - light and flowy The dress just slips on - no zippers There are no holes or stains and this item is from a smoke free home Laying flat armpit to armpit measures approximately 17 1/4”