Amazon Addict Black Bella T-shirt with Rose Gold Metallic Print Cotton Comfy T-Shirt Unisex Sizing Adult: S, M, L, XL, 2XL * 100% Airlume combed and ring-spun cotton * Unisex sizing * 4.2 oz How to Measure Chest Width: Measured across the chest 1 inch below the armhole when laid flat. I would suggest taking your favorite shirt and measuring the chest width to order the correct size.