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 - Black 15.526
Junior Small - White 15.527
Junior Medium - Black 1524
Junior Large - Black 16.526.5
Junior Large - White 15.525.5
Junior XL - Black 1626.5
Junior XL - White 1727.5
Junior Medium - Black
Junior XL - Black 17.529