Size Chart

Size	Age	Height	Weight
Preemie	Preemie	Up to 17 in Up to 43 cm	Up to 5 lb Up to 2.3 kg
NB	Newborn	17–21 in 43–53 cm	5–8 lb 2.3–3.6 kg
0–3M	0–3 Months	21–24 in 53–61 cm	8–13 lb 3.6–5.9 kg
3–6M	3–6 Months	24–26 in 61–66 cm	13–16 lb 5.9–7.3 kg
6–9M	6–9 Months	26–28 in 66–71 cm	16–20 lb 7.3–9.1 kg
9–12M	9–12 Months	28–30 in 71–76 cm	20–24 lb 9.1–10.9 kg
12–18M	12–18 Months	30–32 in 76–81 cm	24–28 lb 10.9–12.7 kg
18–24M	18–24 Months	32–34 in 81–86 cm	28–30 lb 12.7–13.6 kg
2T	2 Years	33–35 in 84–89 cm	29–32 lb 13.2–14.5 kg
3T	3 Years	35–38 in 89–97 cm	32–35 lb 14.5–15.9 kg
4T	4 Years	38–41 in 97–104 cm	35–39 lb 15.9–17.7 kg

Use height & weight first

Baby clothing sizes can vary by brand, so height and weight are more reliable than age alone.

Between two sizes?

We recommend choosing the larger size for a more comfortable fit and extra room to grow.

24M vs. 2T

24M styles generally allow more room for a diaper, while 2T styles may have a slimmer toddler fit.

Please note: This chart is a general sizing guide. Actual fit may vary depending on the brand, garment style and your child's individual measurements.