Jessica McClintock Gunne Sax evening gown size 3/4

Jessica McClintock Gunne Sax long black evening gown with a mesh sequin top lace bust. The size says 3/4, but measurents are provided because it seems alittle small. Zipper works but my manaquine was too big for the dress so the back picture shows it's open. The slit looks the slit in the front can easily be stitched closed for a more conservative look if you want. Lay flat measurements Bust- 13.5" (there is padding) Smallest part of waist -11.5" Hips- 16.5" Length- 51.5"