When trying to decide between two sizes, choose the larger size for a better fit.

SizeChestWaistHipsInseamHeightWeight
Small (4-6)23-2521-2223.5-2539-47.535.5-48 lbs.
Medium (7-8)26-2722.5-23.526-2748-5148.5-59 lbs
Large (10-12)28-29.524.5-25.528-3051-5859.5-87 lbs
Extra Large/Tween (14-16)32.527.53460-6495-115 lbs