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 Blue15.523.5
Junior Medium - Navy Blue1625.5
Junior Large - Navy Blue1725.5
Junior XL - Navy Blue17.527