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

SizeChest/BustCup SizeWaistHips
XS (00-2)32-3424-2533-35
S (4-6)34-3626-2736-37
M (8-10)36-3828-2938-39
L (12-14)38-4031-3240-42
XL (16-18)42-4433-3543-45
XXL (20-22)45-4736-3846-49
2X (20-22)46-4838-4048-50
3X (24-26)50-5242-4452-54
* in inches
Girls Costume Sizing Chart Diagram