L'Agence formal black backless dress

Formal dress. Size 4. Self: 73% triacetate, 27% polyester. Lining: 61% polyester, 39% spandex. The top is a backless pearl white top with straps that can be crisscrossed or straight. The black skirt bottom is slightly form fitting with a slit in the mid back. This dress has only been worn once for 3.5 hours. Can't tell that it has ever been worn!