Children’s clothing sizes simplified.

Babies are like tiny tornadoes of growth—one minute they're in a onesie, the next they're busting out of it! So, when shopping for your little bundle of joy, keep that in mind! To help you navigate the wild world of kiddo sizing, here’s a handy guide!

Reminder: If the size is not followed by a T it means the clothing was designed for a child that has been potty trained and does not need the extra room for diapers toddler clothes usually provide*

Premature Baby Clothing

Newborn Clothing

0-3 Months

3-6 Months

6-9 Months

9-12 Months

12 Months

12-18 Months

18 Months

24 Months or 2T or 2

3T or 3 - 3 Years old

4T or 4 - 4 Years old

5T or 5 - 5 Years old