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

SizeChestWaistHipsHeightWeight
12-18 months28-31.519.5-22.5 lbs
2T21202132-33.526.5-30 lbs
3T-4T22-2320.5-2122-2334-41.530-38 lbs
Baby Costume Sizing Chart Diagram