Shoshanna Black Strapless Peplum Dress

Like new black strapless dress w/ peplum structuring. Wire boning in the back & bust for a structured look. Concealed zipper, zips up the back. There is no label or care tag so I don’t know the actual size(guessing 2), materials(guessing it’s a polyester blend), or care. Top has a lining w/ a slip & hook closure. Bottom is unlined. Mid/heavy weight material. I steam cleaned not knowing the actual care. Measures approximately: 14 1/2” armpit to armpit, 23” armpit to hem, 13” across waist.