I ordered two blouses, I was afraid to make a mistake with the size. With a cutout on the chest ordered S, and with a closed breast ordered M. Both sat perfectly. On the one that with the cutout material stretches more. Chest I have 90 cm, waist 60 and S and M sizes are good. M slightly longer. Quality pleasantly surprised. It looks expensive and stylish, it is washed well (cold washing). The goods came for a week in Moscow! So I recommend it to everyone!