Size Chart - we are the 19th pique cotton button down long sleeve Size Length Bust Sleeve Bottom Hem XS 24.75" 33" 23.625" 35" S 25.5" 35" 24" 37" M 26.25" 37" 24.375" 39" L 27" 39" 24.75" 41" XL 27.75" 41" 25.125" 44" 2X 28.5" 44" 25.5" 46"