Should I skip newborn clothes if my baby is over 4kg?

Which UK Newborn labels already stop near 4kg?

UK shops print an age word on the hanger, then a weight and height on the size chart. Those kilos are not shared. A 4kg baby is past Next First Size (3.4kg / 50cm) and Mamas & Papas Newborn (3.2kg / 50cm), and sits on the ceiling of John Lewis Newborn (up to 4.1kg / 56cm). Next's next printed band is Up to 1 month at 4.5kg and 56cm.

Marks & Spencer's published baby size guide lists Newborn at 3.2kg and 50cm, then the next age band at 4.5kg and 54cm. That is why a larger baby can skip M&S Newborn and still sit in John Lewis Newborn.

What should I buy before birth weight is known?

The NHS list of what to buy for a newborn is a starter kit, not a size order: at least six sleepsuits or babygrows, four to six vests or bodysuits, two cardigans. It does not tell you to fill every drawer in Newborn. NCT notes that size is not known until birth, so a basic mix plus gifts after the birth is the usual plan.

1. 1
   Keep a short Newborn pile Two or three vests and a couple of sleepsuits in the smallest label cover a lighter birth or a brand that cuts Newborn longer (John Lewis to 4.1kg). This is not a full wardrobe.
2. 2
   Put the rest in the next band Buy most everyday pieces in Next Up to 1 month / Up to 3 months, or John Lewis 0–3 months, so a 4kg-plus baby has clothes that match the printed kilos.
3. 3
   Read the chart on that exact brand Do not assume Newborn means the same thing in Next, John Lewis and Mamas & Papas. Open the size guide on the product page before you order a pack.
4. 4
   Hold tags until the first weigh-in Hospital and midwife weights decide which pile actually gets worn. Keep receipts on unopened packs.

Can a long 4kg baby be out of Newborn even if the weight still fits?

Yes, on charts that cap height earlier. Next First Size is only 50cm; John Lewis Newborn runs to 56cm. A long baby can press toes into a footed sleepsuit while the scales still sit under 4.1kg. That is a reason to size up, not a reason to force the smaller label. John Lewis states that the numbers on its chart are body measurements for guidance and that actual garments can vary by style.

• Feet hitting the end of a sleepsuit — move to the next height band (56–62cm on John Lewis 0–3 months; 56–62cm on Next Up to 3 months).
• Poppers that will not meet over the nappy — the vest is past that brand's Newborn cut, even if a looser brand still closes.
• Envelope neck that will not go over the head — length and shoulder width have outgrown the smallest cut.

If a 4kg baby skips Newborn, what about Tiny Baby and First Size?

Tiny Baby and First Size sit below Newborn on most UK charts. John Lewis Tiny Baby is up to 3.1kg and 50cm; Next 5lb is 2.3kg and 44cm; Next First Size is 3.4kg and 50cm. Those labels are for smaller or early babies. A baby already over 4kg does not start there. Gifts labelled Tiny Baby or First Size can still be useful if birth weight comes in lighter than the scan suggested — which is why a few small pieces stay in the drawer until you have a weighed baby.

This page is about clothes labels. It is not growth-chart advice. Weight or feeding worries belong with the midwife or health visitor and the personal child health record (red book).

When is it time to leave Newborn behind?

Leave a brand's Newborn when either the printed kg or the printed cm is crossed, or when the garment is already tight in normal movement. A 4.2kg baby is over John Lewis Newborn on weight alone. A 3.8kg baby who is 57cm long is over that same chart on height. Next First Size is already behind both of those babies.

In shortOver 4kg means skip Next First Size and Mamas & Papas Newborn, treat John Lewis Newborn as a maybe, and put most of the kit in Up to 1 month or 0–3 months. Keep a few Newborn pieces until the first weight is written down.

Is this a list of how many sleepsuits to buy?

No. The NHS starter numbers above are a kit list. This page only answers which size word to put on those pieces when the baby is likely to be over 4kg. How many items you wash in a week is a separate question.