Vintage crossover top

beautiful pattern!! cross over top, one side had an inner hidden snap and the other has a big matching button to.cross over. flowy, not sure the material could be polyester. not sure the size but it was my sisters who is very petite, but some how still fits me, closer to a medium (perhaps the part on my waist is lower for her?) either way can fit nicely on someone from an xs to a medium.