I'm typically a us women's size 4 on top and a size 6 on the bottom. I decided to be risky and order the 6/8, which I'm glad I did! I'm shocked because it fit very well. It doesn't ride up my butt, it sits on my upper arms nice and snug, and shapes nicely around my upper body. It also has padding for your chest/breasts, which is always appreciated. I think it's wonderful, sexy without showing your tummy, and age-appropriate. The blue color is gorgeous on my darker skin tone.