Nightie dress and robe 2-piece set

2-piece set. Nightgown has v-neck, lace detailing and racerback. Robe has open front, sleeves and belt with another tie on the inside. Super soft fabric feel, 90% nylon and 10% spandex. Pattern is black, grey and white. I believe I wore this once and meant to return it but didn’t get around to it.