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)
Juvenile 5-6 - White1417
Juvenile 7 - White16.517
Toddler 2T - Navy Blue1313
Toddler 2T - Royal Blue1313
Toddler 2T - White1214
Toddler 3T - Navy Blue1315.5
Toddler 3T - Royal Blue13.514
Toddler 3T - White1315.5
Toddler 4T - Navy Blue1416.5
Toddler 4T - White1515.5