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 - Baby Pink1523.5
Junior Medium - Baby Pink1625.5
Junior Large - Baby Pink1825
Junior XL - Baby Pink18.526