Quick answer: Most newborns need a short list of easy basics: snap bodysuits, zip or snap footed sleepers, a few sleep sacks instead of loose blankets, socks, a hat for outdoors and weather-ready outer layers. Buy only a few newborn-size pieces, lean on 0–3 month sizes, and wash everything before the first wear.
Shopping for a baby who hasn't arrived yet is tricky: you don't know their birth weight, how fast they'll grow, or how many changes a day spit-up and diaper leaks will bring.
This guide focuses on what to buy: which clothing types earn their place in the first weeks, which closures and fabrics make dressing easier, how to choose between newborn and 0–3 month sizes, and how many pieces to plan for. If you already know you want everyday basics, start with baby girls one-pieces and baby boys one-pieces, then use the checklists below to fill the gaps.
This article is general information, not medical advice. Follow your pediatrician's or family doctor's guidance, especially for premature babies, babies with health conditions, and any questions about sleep, temperature or car travel.
What Clothes Does a Newborn Actually Need?
A newborn needs clothes for three jobs: everyday wear, sleep, and going outside. The American Academy of Pediatrics (AAP) offers a starting list in its guide to choosing a layette, describing it as a basic collection that will get a newborn through the first few weeks.
| Item | AAP starting list | What to look for when you buy |
|---|---|---|
| Sleepwear sets | 3 or 4 | Footed sleepers that zip or snap down the front |
| T-shirts | 6 to 8 | Stretchy necklines or side snaps that open easily |
| Onesies/T-shirts with snaps between the legs | 3 to 4 | Snaps at the crotch for quick diaper changes |
| Newborn sleep sacks | 3 | The right size for your baby and the right weight for the room |
| Sweaters | 2 | Front openings or wide necklines, no ties or cords |
| Caps/hats | 2 | For outdoors only once you're home (more on this below) |
| Socks or booties | 4 pairs | Not tight around the feet or ankles |
| Receiving/swaddle blankets | 4 to 6 | Thin fabric if you plan to swaddle |
Treat these numbers as a starting point. Your real needs depend on your laundry routine, the season and how often your baby needs a change.
Which Clothing Types Work Best for a Newborn?
Bodysuits, sleepers and sleep sacks do most of the work in the first weeks. Special outfits are optional.
Are bodysuits or one-pieces better for newborns?
Both earn a spot, and they do different jobs. A bodysuit (often called a onesie) is a short-legged base layer with snaps between the legs. A full-length one-piece or romper covers the legs too, so it can be a complete outfit on its own.
For the first weeks, the AAP suggests looking for garments that "snap or zip all the way down the front, instead of the back" and that "snap or zip down both legs to make diaper changes easier," according to its tips for dressing your baby. Its layette guide adds a simpler rule: make sure the diaper area has snaps or easy access.
Also check for a neckline that stretches or opens at the shoulder and enough torso length for a diaper. For more on styles and fit, see our guide on how to choose baby rompers and one-pieces.
What should newborns wear to sleep?
Newborns sleep in a fitted sleeper (footed pajamas) or a bodysuit, plus a sleep sack when the room calls for it. The Canadian Paediatric Society's Caring for Kids site recommends properly fitted sleepwear, like a one-piece sleeper, for sleep.
Footed sleepers with a front zipper are the quickest to change at night. As an example, Deux par Deux lists its Baby Organic Cotton One Piece Pajama in Pink Tree Print as 100% organic cotton interlock with a front zipper, long sleeves and attached feet, in sizes 3m to 24m. Compare more sleepers in baby girls pajamas and baby boys pajamas.
Wondering whether footed styles are fine from day one? Our guide Can Newborns Sleep in Footie Pajamas? covers fit and sizing in detail.
Do newborns need sleep sacks or blankets?
Choose sleep sacks, not loose blankets, for sleep. The AAP's parent's guide to safe sleep says that if you're worried about your baby getting cold, "you can dress them in layers of clothing or use a wearable blanket." Caring for Kids is direct: "Babies do not need blankets when they sleep."
A sleep sack (also called a wearable blanket) is a sleeveless bag your baby wears over pajamas. When you shop, look at three details:
- Size: Caring for Kids warns that a sack that is too big can let a baby's head slip down inside, and one that is too tight can stop the hips and legs from moving freely.
- Weight for the room: The Public Health Agency of Canada (PHAC) says to make sure the sleep sack is appropriate for the temperature of the room, and lightweight if the room is warm.
- No weights: PHAC says to stay away from weighted swaddles, sleep sacks and blankets, and the AAP warns against weighted blankets, sleepers and swaddles.
Two examples from our baby sleep sack collection show how much construction can differ. Deux par Deux lists the Plush Sleep Sack in Off-White with a 100% polyester plush outer, a 100% cotton lining and a full-length zipper. The Organic Cotton Sleep Sack in Pink Printed Flowers is listed with an outer of 96% organic cotton and 4% elastane, a 100% cotton lining, shoulder snaps and a full-length zipper. Both come in 0/6M, 6/18M and 18/36M sizes, so check the brand's size guidance against your baby's length and weight.
Planning to move to a regular blanket later? Our age-by-age blanket guide explains when that switch makes sense.
Do you need swaddles?
Swaddles are optional and short-lived. The AAP's swaddling guidance says to use only a thin blanket, place a swaddled baby only on their back, and "stop swaddling as soon as your baby shows any signs of trying to roll over." PHAC advises stopping around 2 months of age, before your baby can roll over.
So don't overbuy. A few thin receiving blankets cover the swaddling stage, and a non-swaddle sleep sack takes over after it. Hip position matters too: the AAP notes that tightly wrapping a baby's legs straight can lead to hip problems. Our guide Can You Swaddle a Baby Too Tight? walks through the fit checks.
Do newborns need hats, socks and mittens?
Yes for outdoors, mostly no for indoors. The AAP's safe sleep guide says: "Don't put a hat on your baby while indoors once you're home from the hospital." PHAC says babies do not need hats when they're indoors, because a hat can make them too hot. For cold-weather outings, the AAP's winter safety tips call mittens or gloves and a hat essential.
For feet, the AAP layette guide says to make sure socks are not too tight around your baby's feet and ankles, and adds: "Do not put shoes on a newborn's feet." Footed sleepers can replace socks indoors, which means fewer lost socks in the laundry. Read more in Does a Newborn Need to Wear a Hat?
Do newborns need sweaters and outer layers?
A couple of light layers are enough for most newborns, plus outerwear sized for your climate. The AAP layette list includes two sweaters. Cardigans that open down the front are easier to get on than pullovers. Our guide to baby sweaters for newborns compares knits, closures and sizing.
Snaps, Zippers or Buttons: Which Closures Are Easiest?
Front zippers and snaps are the easiest closures for a newborn, because you can open the garment without pulling anything over the head. The AAP lists features that make dressing easier, including garments with "loose-fitting sleeves so your hand fits underneath to push the baby's arm through" and garments that "have no ribbons or strings to knot up, unravel, or wrap around the neck."
| Closure | Where it helps | What to check |
|---|---|---|
| Front zipper | Night changes and fast dressing | Whether it runs down one leg so you can reach the diaper area |
| Snaps | Bodysuits, rompers, shoulder openings | That snaps line up easily; count how many you'll do at night |
| Buttons | Knit rompers and special outfits | Slower to close; best for daytime when there's no rush |
| Ties, ribbons, cords | Decoration only | Skip them; the AAP advises against strings around the neck |
Real products show the range. The Deux par Deux Baby Fleece Jumpsuit in Beige Dinosaur Print closes with snaps and is listed as 95% cotton and 5% elastane fleece. The Knitted Romper in Dusty Pink uses buttons at the shoulder, which let the neckline open wide, plus buttons at the bottom; Deux par Deux lists a relaxed fit in sizes 3M to 24M. Zippers suit sleepers; buttons suit daytime outfits.
What Fabrics Should Newborn Clothes Be Made Of?
Look for soft, stretchy knits that wash easily. The AAP recommends garments "made of stretchy fabric," and warns against tight bindings around the arms, legs or neck. Interlock, jersey and rib knits stretch over a newborn's head and around the diaper; stiff wovens, heavy embellishments and scratchy trims don't.
Read the composition label rather than relying on a product name. On the products linked in this guide, Deux par Deux lists fabrics from 100% organic cotton interlock (the footed pajamas) to a cotton-elastane fleece (the jumpsuit) to a viscose, polyester and nylon knit (the romper). Each feels and washes differently, so check the care label too.
Fabric names are not health promises. No fiber guarantees that a baby's skin won't react, and the AAP's advice on cleaning baby clothes suggests switching to a milder detergent only if your baby develops signs of skin irritation. If a rash persists, ask your pediatrician. For a deeper comparison of cotton, bamboo-derived knits and blends, read Softest Fabrics for Newborns.
Should You Buy Newborn or 0–3 Month Sizes?
Buy a few newborn-size pieces and more in 0–3 months. The AAP's layette advice is blunt: "Buy big." It says that unless your baby is born prematurely or is very small, they will probably outgrow newborn sizes in a matter of days, and "even three-month sizes may be outgrown within the first month."
Size labels also vary between brands. On Jenni Kidz product pages alone, you'll see baby sizes written as "3m," "3-6M" and "0/6M." A Deux par Deux "3m" one-piece and another brand's "3-6M" one-piece are not interchangeable, so compare each brand's size chart with your baby's weight and length instead of trusting the age on the tag.
- Expecting a smaller baby or twins? Keep a few more newborn-size pieces, and ask your care team what to pack.
- Expecting an average or larger baby? Make 0–3 months (or the brand's first size) your main working size.
- Gifts: Choose 3–6 months or larger, matched to the season the baby will wear it.
Our baby clothes size guide explains how to measure your baby and read size charts, and When Is a Baby No Longer a Newborn? explains the newborn stage itself.
How Many Newborn Clothes Do You Need?
Plan enough clothes to get from one laundry day to the next, plus spares. The AAP's starting list (3 or 4 sleepwear sets, 6 to 8 T-shirts, 3 to 4 onesies with snaps) is a useful baseline, but your laundry routine matters more than any fixed number.
A simple way to plan is to multiply the outfits you expect per day by the days between washes, then add a few spares for leaks. Here's how that math can look. These are planning examples, not medical guidance:
| Laundry routine | Everyday pieces (bodysuits, one-pieces) | Sleepers |
|---|---|---|
| Every day | Close to the AAP baseline | The AAP baseline of 3 or 4 |
| Every 2–3 days | Daily changes × days between washes, plus a few spares | One per night until laundry day, plus a spare or two |
| Once a week or less | Count changes for a full week, plus spares | One per night for the full week, plus spares |
Keep most of it in 0–3 month sizes and buy more once you see how fast your baby grows. If you're packing for the birth, our newborn hospital outfit and packing guide covers what to bring.
How Should You Layer a Newborn for Canadian Winter?
Use thin layers you can add and remove, and dress for where your baby is right now: the warm house, the cold sidewalk or the car. The AAP's "one more layer" rule is the starting point. Its safe sleep guide says a baby "only needs one more layer than you would wear in the same environment to be comfortable."
How should a newborn dress indoors in winter?
Indoors, dress your baby for the heated room, not the weather outside. The AAP's dressing guide says that in colder weather (under 75°F, or about 24°C), a baby will need several layers of clothing, and that it's generally best to start with an undershirt and diaper covered by pajamas. At home, a bodysuit under a footed sleeper is a simple way to follow that advice. PHAC adds that if the room temperature is comfortable for you, it will be comfortable for your baby too.
How should a newborn dress outdoors in winter?
Outdoors, add warm layers on top and cover the head and hands. The AAP's winter safety tips recommend several thin layers to keep kids warm and dry and call mittens or gloves and a hat essential. Change wet clothing right away. For stroller walks in a Canadian winter, a bunting or one-piece snowsuit sized for your baby goes over the indoor layers. Our baby snowsuit buying guide compares the options by stage.
Can a newborn wear a snowsuit in the car?
No. Take bulky layers off before buckling. The AAP's winter car seat tips say that "bulky clothing, including winter coats and snowsuits, should not be worn underneath the harness of a car seat," because padding flattens in a crash and leaves extra space under the harness. The Canadian Paediatric Society agrees on Caring for Kids: bulky clothing or snowsuits "can interfere with proper harness tightening and placement."
The AAP suggests thin layers underneath, with a blanket or coat placed over the buckled harness, and a top layer you can remove once the car warms up. Follow your car seat manual for harness fit.
What about newborns born in summer?
Summer babies need fewer layers and more shade. The AAP's dressing guide says that in hot weather (over 75°F, or about 24°C) you can reduce your baby's clothing to a single layer. Its baby sunburn guidance says babies younger than 6 months should be kept out of direct and indirect sunlight, and suggests lightweight long-sleeve clothing, long pants and wide-brimmed hats outdoors.
How Should a Newborn Be Dressed for Sleep?
Dress your baby in a fitted sleeper or layers, add a sleep sack if the room is cool, and keep the crib clear. Here's what the AAP, Caring for Kids and PHAC agree on:
- Use sleepwear, not loose bedding. Layers of clothing or a wearable blanket keep a baby warm without blankets in the crib.
- Avoid overheating. The AAP lists sweating, a hot chest and flushed skin as signs your baby may be too warm.
- Take off extras before sleep. Caring for Kids advises removing bibs, necklaces, items with ties or hoods, and hats before putting your baby to sleep.
- Never use outerwear for sleep. PHAC says it's not safe to let babies sleep in their outerwear, so take off the snowsuit or bunting once you're home, even if your baby has fallen asleep in it.
- Skip anything weighted. No weighted sleepers, swaddles, sleep sacks or blankets.
For winter specifics, see our guide to baby pajamas for cold weather.
Should You Wash Newborn Clothes Before Wearing Them?
Yes. The AAP's guidance on cleaning baby clothes says "it's generally a good idea to wash all clothes prior to using them," because newborns tend to have sensitive skin and you don't know who handled the clothing before it reached you. It names coats and jackets that don't touch the skin much as a possible exception.
It also suggests washing socks in a mesh bag and fastening Velcro tabs first. Our guide on how to wash baby clothes so they last longer covers labels, stains and drying.
What Newborn Clothes Can You Skip?
Skip anything hard to get on or tight in the wrong places. Based on the AAP's guidance, these are easy to leave off your list:
- Shoes: The AAP says shoes aren't necessary until after a baby starts to walk.
- Tight necklines, cuffs and waistbands: The AAP advises avoiding clothing that pulls tightly around the neck, arms or legs.
- Ties, ribbons and cords: Decorative strings can wrap around the neck.
- Back closures on everyday pieces: Front openings are easier when your baby is lying down.
- Stacks of newborn-size outfits: Many babies outgrow them within days.
- Dry-clean-only or hand-wash-only items: The AAP recommends clothes that are washable and need little or no ironing.
Newborn Clothes Shopping Checklist
Use this checklist before you buy or register:
- Start from the AAP layette list, then adjust for how often you do laundry.
- Choose front-opening sleepers and bodysuits with snaps between the legs.
- Pick sleep sacks in the right size and weight for your baby's room instead of loose blankets.
- Buy only a few newborn-size pieces and more in 0–3 months, checking each brand's size chart.
- Read fabric composition and care labels; look for stretchy, washable knits.
- Plan winter outings with thin layers, a hat, mittens and outerwear that comes off in the car and at bedtime.
- Wash everything before the first wear.
Ready to compare styles? Browse our full baby clothing shop for sleepers, sleep sacks and one-pieces in current sizes.
Frequently Asked Questions
What clothes does a newborn need for the first weeks?
The AAP's starting list includes 3 or 4 sleepwear sets, 6 to 8 T-shirts, 3 to 4 onesies with snaps between the legs, 3 newborn sleep sacks, 2 sweaters, 2 caps or hats, and 4 pairs of socks or booties. Adjust the numbers to your laundry routine.
Should I buy newborn or 0–3 month baby clothes?
Buy a few newborn-size pieces and more in 0–3 months. The AAP says that unless a baby is born early or is very small, they will probably outgrow newborn sizes in a matter of days. Compare each brand's size chart, because labels vary.
Are snaps or zippers better for newborn clothes?
Both work well when they open down the front. The AAP suggests clothes that snap or zip all the way down the front and down both legs for easier diaper changes. Zippers are quicker at night; snaps suit bodysuits and rompers.
Do newborns need a sleep sack or a blanket?
Use a sleep sack or layers of clothing instead of loose blankets. Caring for Kids says babies do not need blankets when they sleep, and PHAC says that if you use a sleep sack, you don't need a blanket. Choose a sleep sack that fits your baby and suits the room temperature.
Should a newborn wear a hat indoors?
No, not once you're home from the hospital. The AAP advises against hats indoors as part of avoiding overheating, and PHAC says a hat can make babies too hot indoors. Save hats for outdoor walks in cold or sunny weather.
How should I dress my newborn in winter?
Indoors, dress your baby in one more layer than you're wearing. Outdoors, add warm layers, a hat and mittens, plus a bunting or snowsuit for walks. Take bulky layers off before buckling your baby into a car seat.
Do I need to wash newborn clothes before my baby wears them?
Yes. The AAP says it's generally a good idea to wash all baby clothes before use, since newborns tend to have sensitive skin and new clothes may have been handled by others. Coats and jackets that barely touch the skin can be an exception.
Bottom Line
The newborn clothes that matter most are the ones you can put on quickly and wash often: front-opening bodysuits and sleepers, a few sleep sacks, socks, outdoor hats and mittens, and layers sized for your climate. Keep newborn sizes to a minimum, plan around your laundry routine, and let your baby's growth guide the next round of shopping.
Sources
- American Academy of Pediatrics, HealthyChildren.org: Choosing a Layette
- American Academy of Pediatrics, HealthyChildren.org: Tips for Dressing Your Baby
- American Academy of Pediatrics, HealthyChildren.org: How to Keep Your Sleeping Baby Safe: A Parent's Guide to Safe Sleep
- American Academy of Pediatrics, HealthyChildren.org: Swaddling: Is It Safe?
- American Academy of Pediatrics, HealthyChildren.org: Cleaning Baby Clothes
- American Academy of Pediatrics, HealthyChildren.org: Winter Car Seat Safety Tips
- American Academy of Pediatrics, HealthyChildren.org: Winter Safety Tips
- American Academy of Pediatrics, HealthyChildren.org: Baby Sunburn Prevention
- Canadian Paediatric Society, Caring for Kids: Safe Sleep for Babies
- Canadian Paediatric Society, Caring for Kids: Car Seat Safety
- Public Health Agency of Canada: Dressing Your Baby for Sleep
