TOPSHOP black lace dress size 6

Black lace dress by TOPSHOP, with light blue and sage green lace details. I don’t see a size tag but it fits like a size 6 (that’s the size I was when I bought this) and the measurements are 15.5” pit to pit (chest is darted), 20” sleeves (meant to fit as 3/4 sleeves), 15” across shoulders, 13.5” across waist lying flat, 40” L Comment with any questions, thank you!