Pretty Little Thing black satin boat neck mini dress size 6 NWT

New with tags, Pretty Little Thing black satin boat neck mini dress size 6. Dress is structured with a modest neckline and back zipper. 100% polyester. No stretch. My mannequin is a size XS/S and this barely fit on her so please refer to measurements. Underarm to underarm: 16” Waist: 14.5” Hip: 16” Length: 31” Measurements taken flat. A2 0898 10oz