Children's 
Size    Chest Waist Hip
  (in inches) (in inches) (in inches)
Small S (4-6) 23-25" 21-22" up to 46"
Medium M (8-10) 27-29" 24-25" up to 54"
Large L (10-12) 28-30" 25-26" up to 58"
X-Large XL (12-14) 30-32" 25-26" up to 61"
Tween XXL XXL (14-16) 31-33" 26-27" up to 63"