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 - Kelly Green14.524
Junior Medium - Kelly Green1525
Junior Large - Kelly Green1726
Junior XL - Kelly Green1827
Junior 2XL - Kelly Green1928