Youth Small measures roughly; 15 inches across the chest and 18 inches in length from the front neckline to the bottom.
Youth Medium measures roughly; 16 1/2 inches across the chest and 19 inches in length from the front neckline to the bottom.
Youth Large measures roughly; 17 1/2 inches across the chest and 21 1/2 inches in length from the front neckline to the bottom.
Youth XX-Large measures roughly; 20 inches across the chest and 24 1/2 inches in length from the front neckline to the bottom.