Onyx nite long blue formal dress sz 8

In EUC. Shoulder strap also has spaghetti strap underneath. Dark blue. Has underlining. Back zipper. No pockets. Please see photos for approximate flat lay measurements. Except for NWT and dry clean items, everything is washed in no-dye, no fragrance laundry. Comes from pet-free, smoke free home. I welcome any questions, so please feel free to ask. Z