Babies need fewer clothes than most lists say. For the first six weeks we suggest six bodysuits, five sleepsuits, two cardigans, a hat and a snowsuit or pram suit for winter babies (sample advice).
Buy mostly size 56. Size 50 only fits for a week or two unless the baby is small or early, and you can always swap unworn pieces for the next size.
Choose poppers down the front and wrap necks: nothing has to go over a newborn’s head.