Lying flat down approx. size measurements:
Small
Shoulder(seam line to seam line): 19 inches
Armpit to armpit: 22.5 inches
Sleeve(shoulder seam line to end of sleeve): 25.5 inches
Back body center length(bottom of collar to hem): 26 inches
Large
Shoulder(seam line to seam line): 20.5 inches
Armpit to armpit(across chest): 26 inches
Sleeve(shoulder seam line to end of sleeve): 27 inches
Back body center length(bottom of collar to hem): 28.25 inches
XL
Shoulder(seam line to seam line): 21.75 inches
Armpit to armpit(across chest): 26.75 inches
Sleeve(shoulder seam line to end of sleeve): 27.25 inches
Back body center length(bottom of collar to hem): 28.75 inches
XXL
Shoulder(seam line to seam line): 22.5 inches
Armpit to armpit(across chest): 28 inches
Sleeve(shoulder seam line to end of sleeve): 27.5 inches
Back body center length(bottom of collar to hem): 29.25 inches