Sheer Embroidered Gauzy MAXI Dress Keyhole Back No Label XS/S (K319)

K319 This is a lovely sheer sleeveless dress with embroidered flowers, sequins and rhinestones on the top, and skirt is embroidered. Dress has a keyhole closure at back and snaps inside at the shoulder - to keep bra straps intact? Unknown material, feels gauzy. Measurements (with garment laid flat): Bust - 15%, Length - 44". Gently used condition - no stains, tears, rips etc.