Peace

Size (inch)	XS	S	M	L	XL
Width	14,7	15,7	16,9	18,1	19,2
Height	24,8	25,5	26,3	27,2	27,5

To get good measurements, lay the shirt (preferably the one you love) on a flat, hard surface, then if there are any creases, smooth them out as much as possible

Width: place the ruler from the bottom of the sleeve and measure the width stopping under the other sleeve.

Height: measure from the highest point of the shoulder (top of the collar) to the bottom of the shirt.