ANDY THE ANH Navy blue sexy bustier dress 0

Made in Canada by designer Andy The Anh, this stunning dark navy blue dress is fully lined and has some kind of black streychy attachment that buttons inside but I have no idea how to fit. It is not on the photos but it will be included.
Very good pre-owned condition, minor signs of wash/wear, no flaws. 
Labelled size 0.
Bust 30 inches
Waist 25 inches
Hips 33 inches
Length from underarm 31 inches