As in the description above, these t-shirts are form fitting and lightweight. My wife says the run about a size small. Bella Sizing: S:0-4, M:4-8, L:8-10, XL:10-12, XXL:12-14. Thanks to our great fans for sending in pics of themselves. Shirt designed by Artist Catherine Haugland at Avalon Rose Design. Check out her work at http://www.theavalonrose.com