Width is measured across the chest below the sleeves from seam to seam. Height is measured from the bottom of the shirt to the highest point on the shoulder (where the seam meets the neck).

Please note that each product has its own specific sizing chart.
SizeWidth (inches)Height (inches)
Junior Small - Navy Blue16.525
Junior Medium - Navy Blue17.526
Junior Large - Navy Blue18.528.5
Junior XL - Navy Blue19.527.5