Youth Small measures roughly; 16 1/2 inches across the chest and 17 1/2 inches in total length from the front neckline to the bottom.
Youth Large measures roughly; 20 inches across the chest and 22 inches in length from the front neckline to the bottom.
Youth X-Large measures roughly; 21 inches across the chest and 24 inches in length from the front neckline to the bottom.