OSCAR DE LA RENTA black/satin trim nightie/dress?

Pink label. M. modal cotton with 5% spandex. pleated at top/back with a satin trim at neck and bow design. A-line. pit to pit-18.5" 21 1/4" long on side. I believe it supposed to be a nightgown but looks more like a cute mini retro dress to me. Could be worn as either