How to Shop for Baby Clothes: A Step-by-Step Buying Guide

Quick Answer

To shop for baby clothes without wasting money, buy by your baby's weight and length rather than age, and keep the newborn size to a handful of pieces because many babies outgrow it within weeks. Focus on soft cotton bodysuits and sleepsuits with poppers or zips for quick changes, buy more in the 0 to 3 and 3 to 6 month sizes, and wash everything before the first wear.

Key Takeaways

  • Sizes vary a lot between makers, so the height and weight on the label matter more than the month range.
  • Envelope (lap) necklines stretch over the head and can be pulled down over the shoulders after a nappy leak.
  • Zips are faster than poppers at 3 am, while poppers along the legs make nappy changes easier.
  • Babies get through two or three outfits a day in the early weeks, so it's quantity of basics that counts.
  • Gifts tend to arrive in newborn and 0 to 3 month sizes, so hold off buying those until after the baby shower.

Step 1: Learn Sizes Before You Shop for Baby Clothes

Two makers' "0 to 3 months" can differ by several centimetres, so look for the height (length) and weight on the size chart and buy a size where your baby sits in the lower half of the range, which gives you a few weeks of wear before it's outgrown.

Size label Typical length Typical weight How long it usually lasts
Newborn Up to about 56 cm Up to about 4.5 kg A few weeks, sometimes not at all
0 to 3 months About 56 to 62 cm About 4.5 to 6 kg Two to three months
3 to 6 months About 62 to 68 cm About 6 to 8 kg Around three months
6 to 12 months About 68 to 80 cm About 8 to 10 kg Four to six months

Step 2: Build a Starter Wardrobe

The first time you shop for baby clothes, a small set of basics covers almost everything in the first three months, and you can fill gaps once you know your baby's size and the season.

  1. Short or long sleeve bodysuits: 7 to 10.
  2. Sleepsuits with zips or poppers: 6 to 8.
  3. Soft trousers or leggings: 3 to 4.
  4. Cardigans or light jackets: 2.
  5. Socks or booties: 5 pairs, plus 2 soft hats for outings.
  6. Scratch mitts: 2 pairs for the first few weeks.

Step 3: Check Fabric and Fastenings

Newborn skin is thin and easily irritated, so soft, breathable fabric matters more than looks. Cotton (especially organic or brushed cotton) and cotton muslin or gauze are the safest everyday choices, while bamboo-viscose feels silky and stretches well. Fleece and plush are cosy for outerwear but can overheat a baby if layered indoors.

  • Flat seams and covered poppers to avoid rubbing.
  • Tag-free labels or printed care labels.
  • Poppers down the legs or full-length zips for quick nappy changes.
  • Fold-over mitten cuffs on newborn sleepsuits.

If you're still putting together the bigger kit, our guides to the best baby gadgets for new parents and the best baby strollers cover the essentials beyond clothing.

Step 4: Plan for the Season

A baby born in winter needs warmer sleepsuits, a quilted all-in-one for outings and a few hats, while a summer baby lives in short-sleeve bodysuits and light muslin. Buy the next size up with the coming season in mind, because a 6 to 12 month winter suit is no use if that size lands in July.

What to Expect at Each Price

Price per item (USD) What you usually get Best for
Under $15 Single cotton bodysuits and rompers Everyday basics you'll go through quickly
$15 to $40 Multi-piece sets, quilted sleepsuits, better cotton Outfits, gifts and winter layers
$40 to $80 Gift sets, organic cotton, special-occasion outfits Presents and photos
$80 and up Premium fabrics and designer pieces Keepsakes rather than daily wear

Most of what babies wear day to day should come from the first two rows, since clothes rarely last more than a few months before they're outgrown. It's sensible to shop for baby clothes in multipacks for basics and spend more only on a couple of outfits for photos or visits.

Safety Tips

Wash new clothes before the first wear to remove finishing chemicals, and use a gentle, fragrance-free detergent. Avoid cords, drawstrings and ribbons around the neck, and check buttons and decorations regularly, as anything that comes loose is a choking hazard. For sleep, dress your baby in a sleepsuit or sleeping bag suited to the room temperature with no hats indoors, so they don't overheat. If your baby has eczema or a rash that doesn't settle, speak to your health visitor or GP, as this guide isn't medical advice.

Our Picks From the Global Swanky Store

These cover the basics you'll need when you shop for baby clothes for the first few months.

The Newborn Baby Clothing Sets – Soft Cotton 4-Piece Outfits for Boys & Girls is $38.69, for parents who want a starter bundle in one go.

Four soft cotton pieces in one set is an easy way to cover the first weeks, and it makes a thoughtful gift too.

The Baby Cotton Romper with Snap Buttons for Easy Changes is $29.74, made for quick night-time nappy changes.

Snaps along the legs mean you don't have to fully undress your baby, which matters at 3 am.

The Infant Quilted Butterfly Jumpsuit - Pure Cotton, Warm Winter Baby Sleepsuit is $25.23, suited to babies born in autumn or winter.

Quilted cotton adds warmth without the sweatiness of synthetic fleece.

The Baby Cotton Gauze Lantern Pants Two-Piece Set, Long Sleeve Bloomers is $27.83, for spring and summer babies.

Double-layer gauze is light and breathable, and it softens with every wash.

The Baby One-Piece Cotton Romper – Soft & Comfortable for Infants is $12.42, a budget basic to stock up on.

At this price, it's easy to buy several so there's always a clean one ready.

Frequently Asked Questions

Should I buy newborn size clothes?

Buy just a few, since many babies are born too big for them or outgrow them within two to four weeks.

Do I need to wash baby clothes before use?

Yes, a quick wash removes dust and finishing residues and softens the fabric.

Are second-hand baby clothes okay?

Yes, they're a great way to save money, though check poppers, seams and zips, and wash them first.

How many sleepsuits does a newborn need?

Six to eight is usually enough if you wash every two or three days.

What's the difference between a bodysuit and a romper?

A bodysuit is a vest that snaps under the nappy, while a romper is a full outfit, often with legs.

Where to Start

Begin with a cotton starter set and a few rompers in 0 to 3 months, then wait until after the birth (and the gifts) before buying more. If you shop for baby clothes in the next size up a month or two ahead, keeping the coming season in mind, you'll rarely be caught short.

Back to blog