Vintage ladies black maxi dress, size 16, but measures small, so may better suit a modern UK 14. Spaghetti straps, with a satin top, and then long velvet maxi skirt. Slip style dress. I believe this to be Dorothy Perkins, as the labels look similar to their vintage label design, but the brand has been cut out. In very good used condition, especially for its age.

Approximate Measurements in inches:

Armpit to armpit: 19

Waist: 17.5

Length: 52