This outfit is very flattering and breathable. My children have blessed me with a bit of mom belly which I am selfconscience about. The corset structuring of the top hides and compresses and gives me a flattering hour glass figure. I am 5’5, approx. 156 lbs, petite curves. material is stretchy in the right places and the piece that goes around the neck is not too tight. Very sexy outfit. I love it. I could have also fit a small due to the stretchiness of the outfit but the neck piece would have been too tight and the built in body suit would have been too tight on the Mrs. The medium was perfect.