Infant size chart for US

US Infant Size Chart

Newborn (NB) - 0-1 month
Weight: 5-8 lbs | Height: 17-21"

0-3 Months
Weight: 8-12 lbs | Height: 21-24"

3-6 Months
Weight: 12-16 lbs | Height: 24-27"

6-12 Months
Weight: 16-20 lbs | Height: 27-29"

12-18 Months
Weight: 20-24 lbs | Height: 29-31"

18-24 Months
Weight: 24-28 lbs | Height: 31-33"

Sizing Tips:
• Babies grow quickly! Consider sizing up for longer wear
• If baby is between sizes, choose the larger size for comfort
• Weight is typically a better indicator than age for proper fit
• Bodysuits should fit snugly but not restrict movement