Rock Roll n Soul Rock Western Shirt Skulls of the West Cotton, Sizing on Rock Roll n Soul Western Shirts: Medium; 44 Inch Chest and waist, neck is a 16, shoulder 18 3/4. Large: 46 inch Chest and waist, neck is a 16 1/2, shoulders 19 1/2. XL: 48 Inch Chest and waist, neck is a 17, Shoulders 20 1/4. XXL: 51 Inch Chest and waist, neck is a 17 1/2, Shoulders 21 1/4.