Keep Calm I'm The Boss - Soft Cotton Junior Fit Women T-Shirt * Please note that this is a thin, lightweight SLIM FITTED shirt for women. IT DOES RUN SMALL. We recommend ordering 1-2 sizes up if needed and only if needed. The fit of this shirt is closer to JUNIOR SiZE, not regular size. One way to tell is if you measure yourself from armpit to armpit and then compare your measurements on the size chart to see which size best fits you. Copyright Wallsparks. This copyright-protected design was created by Wallsparks, the ONLY Shop authorized to sell this product. Small (Body width 31 1/2 inches, Body length 26 1/4 inches), Medium (Body width 33 1/2 inches, Body length 26 3/4 inches), Large Large (Body width 35 1/2 inches, Body length 27 1/4 inches), XL (Body width 37 inches, Body length 28 inches) 4.2 oz., 100% combed wingspan cotton, Athletic heather is 90/10 cotton/poly, Longer length body and shoulder taping Soft and comfortable. Trendy and fashion fit.