These shirts are made to traditional patterns so have a much larger fit than a modern day shirt.

Please see approximate measurements below:

Size 13" XS S M L XL 2XL 
Collar - measured centre buttonhole to centre buttonhole 14" 15" 16" 17" 18" 19" 20"
Front Length - measured from shoulder seam to hem 28" 33.5" 34.5" 34.5" 34.5" 34.5" 34.5"
Sleeve Length excluding cuff - measured from shoulder point to cuff 18" 19" 22" 23" 23" 23" 24"