Baby clothes sizes by age, weight and height (size chart + tips)

Babies grow at an astonishing pace — some outfits barely get worn. Knowing how to pick the right size saves money, wardrobe space and frustration (yours and gift-givers’).

Baby clothes size chart

Figures are approximate — every brand has its own measurements, so always check the label.

Why not choose by age alone?

Two babies of the same age can be very different sizes. A baby born at 4 kg may never wear newborn clothes. That’s why weight and height are the best guide — length matters especially for bodysuits and sleepsuits, which pull at the shoulders and nappy.

How many pieces at each stage?

In a hot climate like Mozambique’s, babies get messy and sweaty: more light pieces beat a few thick ones. More tips in our baby layette guide.

Tips for getting the size right

• Choose cotton — it’s cool, soft and breathable. Wash before use: some pieces shrink slightly.
• Side-opening or envelope-neck bodysuits make changes much easier in the early months, like our cotton baby bodysuit.
• Elastic-waist leggings and trousers grow with your baby — see our cotton baby leggings.
• Feet: before walking, babies don’t need stiff shoes. Socks and soft crochet booties keep feet warm without squeezing.
• Think about the season: if baby will wear 6–9 months in winter, choose long sleeves for that stage.

Buying a gift?

Everyone gives newborn! Choose 3–6, 6–9 months or bigger — mum will thank you later. Accessories like baby bibs and headbands last much longer. More ideas in newborn gift ideas.