Potions Library Unisex Button UpSTOP! Do this before purchasing: 1. Find a shirt that you own that fits you well. 2. Lay the shirt flat and measure across shoulders, across the chest under the arm pits, and across the waist. 3. Compare those measurements to the size chart provided to find your size. The sizing for this shirt is a loose fit, not slim fit. I accept returns and exchanges (provided I have stock) but you're responsible for all shipping costs. I made this pattern inspired