Small Religion black mini dress with lower back cut out—guitar with wings

Small black mini dress with a nice zipper opening at the back neckline.. there is a small cut out that reveals the lower back and then elastic gathering right above the hips…cool rocker brand Religion. Guitar and wing design on front of dress. The tag says S/10/38. I’d say that it fits like a medium. Cuffed sleeves for a sleeveless look