Our sizing is Australian standard sizing-
Size 0000- newborn
Size 000- approx. 0-3 months
Size 00- approx. 3-6 months
Size 0- approx. 6-12 months
Size 1- approx. 12-18 months
Size 2- approx. 18-24 months
Size 3- approx. 3 years
Size 4- approx. 4 years
Size 5- approx. 5 years
Size 6- approx. 6 years
If you're unsure about size or your bub is in between sizes, we do recommend sizing up to ensure lots of wear. If you are still unsure about which size to order, please feel free to contact us and we will help x