Disney Parks Authentic - Infants & Kids
Size
(approx)
Alpha Height in Inches Weight in lbs Age Chest in Inches Waist in Inches
Up to 6m Layette 17-27" 7-18 lbs 0-6 mos up to 18" up to 17"
Up to 9m Layette 17-28" 7-20 lbs 0-9 mos up to 18 1/2" up to 17 1/2"
3m   17-22" 7-12 lbs 0-3 mos 17" 16"
6m   22-27" 12-18 lbs 3-6 mos 18" 17"
9m   27-28" 18-20 lbs 6-9 mos 18 1/2" 17 1/2"
12m   28-29" 20-22 lbs 9-12 mos 19" 18"
18m   29-33" 22-26 lbs 12-18 mos 20" 19"
24m   33-36" 26-29 lbs 18-24 mos 21" 20"
36m   36-39" 29-32 lbs 24-36 mos 22" 20 1/2"
2T   33-36" 26-29 lbs 2 yrs 21" 20"
3T   36-39" 29-32 lbs 2-3 yrs 22" 20 1/2"
4T   39-42" 32-37 lbs 3-4 yrs 23" 21"
2/3 XXS 33-39" 26-32 lbs 2-3 yrs 22" 20 1/2"
4/5 XS 39-45" 32-41 lbs 4-5 yrs 24" 21 1/2"
6 S 45-47" 41-46 lbs 5-6 yrs 25" 22"
7/8 M 47-53" 46-68 lbs 7-8 yrs 27" 23"
10/12 L 53-59" 68-87 lbs 9-10 yrs 30" 25"
14/16 XL 59-64" 87-115 lbs 11-12 yrs 33" 27"

How to Measure Kid and Toddler Sizes:

Measuring Guidelines for Kids and Toddlers Height Stand child with feet slightly apart and their back to a wall. Measure from the floor to the top of their head for height. Measure child without shoes for best results.
Chest With arms relaxed at sides, measure child around the fullest part of their chest. Keep tape measure parallel to the floor.
Waist Standing straight up, measure child's natural waist. Keep tape measure comfortably loose and parallel to the floor.

How to Measure Infant Sizes:

Measuring Guidelines for Infants Height While lying down and legs extended, measure infant from top of head to bottom of feet.