This is the perfect top for a night out! Runs true to size, but not much stretch, so if you have a larger bust you might want to size up for a little extra space. Nice dressy material. Fabric: 100% polyester The model is in a small. Small - 0/2-3/4, Medium - 5/6-7/8, Large - 9/10-11/12 XL - 13/14-15/16