Our beautiful Italian linen shirts are available in 5 different sizes. Small for collar size 14 1/2" the actual shirt measures 42"across the chest, Medium for collar size 15 1/2" chest measures 44", Large for collar size 16 1/2" chest measures 46", Extra Large for collar size 17 1/2" with chest measuring 50" and XXL for 18 1/2" collar. Our shirts are cut long in both body and sleeve length.