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Baby Clothing Size Guide

Finding the right size for your growing baby can be tricky. Use our comprehensive size charts below to ensure a perfect fit.

How to Measure Your Baby

1

Weight

Weigh your baby without clothes or diaper for the most accurate measurement.

2

Height

Lay baby flat and measure from the top of the head to the bottom of the feet.

3

Chest

Measure around the fullest part of the chest, under the arms.

4

Waist

Measure around your baby's natural waistline at the belly button.

Newborn Sizes

SizeWeightHeightChestWaist
PreemieUp to 5 lbsUp to 17"10"10"
Newborn5-8 lbs17-21"12"12"

Baby Sizes (0-12 Months)

SizeWeightHeightChestWaist
0-3M8-12 lbs21-24"14"14"
3-6M12-16 lbs24-26"15"15"
6-9M16-20 lbs26-28"16"16"
9-12M20-24 lbs28-30"17"17"

Toddler Sizes (12M-4T)

SizeWeightHeightChestWaist
12-18M24-28 lbs30-32"18"18"
18-24M28-30 lbs32-34"19"19"
2T30-32 lbs34-36"20"20"
3T32-35 lbs36-38"21"21"
4T35-39 lbs38-40"22"22"

Sizing Tips

  • When in doubt, size up. Babies grow quickly, and a slightly larger size gives room to grow.
  • Weight is often the best indicator. If your baby is between sizes, use weight as your primary guide.
  • Consider the style. Some styles fit more snugly than others. Rompers and onesies should allow for diaper room.
  • Account for shrinkage. Cotton garments may shrink slightly after washing. Check care labels.

Still unsure about sizing?

Our customer service team is happy to help you find the perfect fit.

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