All our Sherwanis have four inches loosening over the body measurement. So if your chest round measurement is 38 inches then you should go for a 38 (Medium) size Kurta which will have a garment ready chest measurement of 42 inches. We offer Four sizes - Medium= 38 (Chest - 42), Large = 40 (Chest - 44), X- Large = 42 (Chest - 46), XX - Large = 44 (Chest - 48) .