I bought this on a whim and I am so glad I did! I am 5'9" and 155 pounds with all my weight in my upper body (aka, no hips or butt) and bought a large. It fits wonderfully through the body, but could be a bit longer in the length for me. The sleeves are well fitted without being too puffy or tight, but the cuffs are too tight for me to button the button (there is no give in the silk, but it lays nicely without the button). The colors are beyond my expectations and look great even with my porcelain skin and light brown hair. The silk is very smooth, but was full of static straight from the package. I plan on wearing a tank underneath due to this, but not because of modesty as the shirt is cut to cover well. I would buy this over and over again!
(Oh, and it is dry clean only).