Haters

Size (inch)	XS	S	M	L	XL
Width	17,9	19	20	21	22,4
Height	24,4	25,2	26	26,7	27,1

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.