You're standing in front of a pile of tiny bodysuits, wondering: size 50, 56 or straight to 62? You're not alone – hardly any question occupies parents-to-be and gift-givers as much as the right baby size. The good news: the system behind it is simpler than it looks at first glance. Here you'll find the complete size chart, an honest look at how fast your baby really grows, and practical tips for shopping and gifting.
The baby size chart at a glance
Baby clothing sizes are named after body length in centimetres. So size 56 means: it fits a baby who is about 56 cm long. This is how sizes match up with age:
| Size | Age (approx.) |
|---|---|
| 50 | Newborn |
| 56 | 0–2 months |
| 62 | 2–4 months |
| 68 | 4–6 months |
| 74 | 6–9 months |
| 80 | 9–12 months |
Important: these are guidelines, not fixed rules. Some babies are born at 54 cm and skip size 50 entirely, others wear it for several weeks. Both are completely normal – every child grows at their own pace.
Why your baby outgrows sizes 50 and 56 within weeks
In the first three months, babies grow faster than at any other time in their lives: on average three to four centimetres a month. A newborn measuring 52 cm has often left size 50 behind after just two or three weeks, and size 56 rarely lasts longer than six to eight weeks.
For your shopping, that means: you need surprisingly little in the smallest sizes. A few bodysuits and pyjamas in newborn size are enough to start with – most of your newborn essentials can easily be one size up. That way your baby actually wears every piece, instead of saying goodbye to it after two wears.
The rule of thumb: go one size up
If you're torn between two sizes, choose the bigger one. Slightly roomy clothing is never a problem for a baby: sleeves can be rolled up, and a loose bodysuit still sits comfortably. Clothing that's too tight, on the other hand, pinches around the nappy, stretches over the little tummy and ends up in the cupboard sooner than you'd like.
Just remember: growing into it is always better than growing out of it. That applies to your own shopping just as much as to gifts.
How sizes are labelled at sunnozy
With us, you won't find sizes in centimetres but age sizes – which makes choosing much easier in everyday life:
- Newborn – roughly equivalent to size 50/56
- 0–3 months – roughly equivalent to size 56/62
- 3–6 months – roughly equivalent to size 62/68
- 6–9 months – roughly equivalent to size 68/74
- 9–12 months – roughly equivalent to size 74/80
If you're not sure which size fits right now, our size guide will help you in just a few clicks. And for our bodysuit sets, the rule of thumb from above applies: if in doubt, choose the next age size up.
Gift tip: give size 62/68 instead of 50/56
New parents almost always receive the same gifts: sweet, tiny pieces in the smallest sizes. Many mums know the result – a mountain of newborn clothes, half of which never get worn, while from the fourth month the wardrobe is suddenly empty.
Do it better: give size 62 or 68 – at sunnozy, that's 3–6 months. A ribbed bodysuit set in this size comes into its own exactly when the first wave of gifts has long been used up. In our gift selection you'll find more ideas that won't be too small after just two weeks.
The safest choice: gifts that don't depend on size
Don't know the exact due date or birth length? Then go for things that don't have a size at all. Muslin swaddles, for example: our set of 3 muslin swaddles measure 112 × 112 cm and are with families from day one – as a burp cloth, light blanket, privacy screen on the pram or mat. One size, countless uses, zero risk of it not fitting.
Accessories like bandana bibs made from 100% cotton or the bib and sock gift set also last a long time and get used every day. If you want to play it safe, take a look at our muslins and blankets or accessories – you can't go wrong.
In a nutshell
- Baby sizes correspond to body length in centimetres – the chart above gives you the guidelines.
- Sizes 50 and 56 are often history after a few weeks: only buy a few pieces in them.
- If in doubt, always go one size up.
- For gifts: size 62/68 instead of 50/56 – or size-free classics like muslin swaddles.
By the way: we ship from Switzerland for CHF 5.90, and shipping is free from CHF 50. So the gift – or the reorder in the next size – reaches you quickly.