Ordering a onesie for a newborn baby is trickier than it seems. Babies grow incredibly fast — and the sizes aren't always clear. We'll explain.
Baby Clothing Sizes: The Standard
Baby clothing is sized in centimeters (body length), not by age. This is convenient because all babies grow at their own pace. A size 62 fits an average 3-month-old baby, but it can also fit a large 6-week-old or a small 4-month-old baby.
Baby Clothing Size Chart
| Size | Body Length | Average Age |
|---|---|---|
| 50/56 | 50–56 cm | 0–1 month |
| 62 | 56–62 cm | 1–3 months |
| 68 | 62–68 cm | 3–6 months |
| 74 | 68–74 cm | 6–9 months |
| 80 | 74–80 cm | 9–12 months |
What size should I choose for a baby gift?
Our tip: choose size 62/68. This is the most commonly worn size and fits most babies between 1 and 6 months. Size 50/56 is often too small after the first few weeks, and then your gift will barely be worn.
Consider the Season
A baby born in the summer needs different clothes than a winter baby. Onesies are perfect for warm months — but for winter, you might want a bodysuit that can go under a sweater. Pay attention to this when choosing your gift.
Larger Size = Longer Enjoyment
If you're torn between two sizes, choose the larger one. Parents really appreciate it when clothes fit for a bit longer — and a slightly too large onesie still looks adorable.
Personalized Clothing: Always Choose a Slightly Larger Size
For personalized clothing, like with Eigen Afdruk, it's especially helpful to choose a slightly larger size. You want the onesie with a name to be worn for as long as possible. Size 68 or 74 is a smart choice for a newborn baby as a baby gift.
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