Quick answer: Smart baby clothes shopping starts small. For the first months, plan on about 6 to 8 bodysuits, 3 or 4 sleepers, 2 or 3 sleep sacks and a few warm layers, mostly in 0–3 and 3–6 month sizes. Check fibre, closures and care labels, buy outerwear near the season, and add more once you see what gets used.
Baby clothes are easy to overbuy. Tiny outfits are cheap one at a time, gifts pile up, and nobody knows yet how fast your baby will grow. The result is often a drawer of unworn newborn sizes and a scramble for sleepers in week six.
This guide is a buyer's plan for the first year. It gives you a baby wardrobe essentials checklist with starting quantities from newborn to 12 months, shows how season and climate change the list in Canada and the U.S., and walks through the label checks that matter before you pay. When you're ready to shop, start with baby girl clothes (0–36 months) or baby boy clothes (0–36 months), then narrow to everyday baby girl one-pieces, baby boy one-pieces and baby sleep sacks.
What this guide covers:
- What to buy first and what can wait
- A 0–12 month checklist table with starting quantities
- How to shop by season and climate
- Sizing, fibre labels, closures and care labels in plain terms
- Clothing details to skip, based on Health Canada and CPSC guidance
- When to buy each item, plus registry, gift and return checks
What Should You Buy First When Shopping for Baby Clothes?
Buy the pieces your baby will wear every single day before anything else: bodysuits, sleepers and something warm to sleep in. Everything else, from pants to party outfits, can be added once you know your baby's size and your laundry rhythm.
A simple order of priority keeps the cart under control:
- Sleep: footed sleepers or one-piece pajamas, plus sleep sacks.
- Everyday base layer: bodysuits (also called onesies) with snaps at the bottom.
- Warmth: a couple of sweaters or cardigans, hats and socks.
- Outerwear: a bunting bag, snowsuit or light jacket, matched to the season your baby will actually be outside in.
- Extras: pants, rompers, dresses and special-occasion outfits.
The first three groups do most of the work in the early months. If you're shopping specifically for the first weeks, our guide to what newborns actually need to wear goes deeper on newborn clothing types, and the newborn hospital bag guide covers the going-home outfit.
How Many Baby Clothes Do You Need From 0 to 12 Months?
Enough to get from one laundry day to the next, plus a few spares for leaks and spit-up. The newborn column below is based on the American Academy of Pediatrics' newborn clothing list, trimmed to a smaller starter set where noted. The 3–6 and 6–12 month columns are Jenni Kidz planning estimates for a family that does baby laundry every two to three days. Treat every number as a starting point, not a rule.
According to the AAP's Registering for Baby Clothes page on HealthyChildren.org, a newborn starter list includes "3 or 4 sleepwear sets," "6 to 8 T-shirts," "3 to 4 onesies/T-shirts with snaps between legs," "3 newborn sleep sacks," "2 sweaters," "2 caps/hats" and "4 pairs of socks or booties."
| Item | Newborn qty | 3–6M | 6–12M | Notes |
|---|---|---|---|---|
| Bodysuits / onesies | 6–8 (trimmed; the AAP lists 6 to 8 T-shirts plus 3 to 4 snap onesies) | 6–8 | 5–7 | Mix short and long sleeves for your season; multipacks lower the cost per piece |
| Sleepers / footed pajamas | 3–4 (AAP) | 4–5 | 4–5 | One per night until laundry day, plus a spare |
| Sleep sacks | 2–3 (AAP lists 3) | 2 | 2 | Many are sized in wide ranges, so one size can last several months |
| Pants, leggings or rompers | 0–2 | 3–4 | 4–6 | More useful once your baby sits, rolls and crawls |
| Sweaters / cardigans | 2 (AAP) | 2 | 2–3 | Front-opening styles are easier to put on |
| Hats | 2 (AAP) | 1–2 | 1–2 | Add a warm toque in winter and a brimmed sun hat in summer |
| Socks / booties | 4 pairs (AAP) | 4–6 pairs | 6–8 pairs | Socks go missing; buy in a single color to make pairs easy |
| Outerwear | 1 if born in cold months | 1 per season | 1 per season | Bunting bag or snowsuit for snowy winters; light jacket elsewhere |
| Special-occasion outfits | 0–1 | 0–1 | 1–2 | Buy within a few weeks of the event |
A Deux par Deux multipack is one way to fill the bodysuit row quickly. The brand lists the Three Pack Organic Cotton Onesie Beige Printed Airplanes as three long-sleeve bodysuits in 96% organic cotton and 4% elastane, with "grow-with-me" bottom snap closures, in sizes 3M to 24M.
How do you adjust the numbers for your laundry routine?
Multiply the changes you expect per day by the days between washes, then add two or three spares. A newborn might go through two or three bodysuits a day during a leaky week. If you wash daily, you can stay near the low end of each range. If you wash once a week, you'll need closer to a full week of sleepers and bodysuits. The fastest way to calibrate is to track which drawer empties first during one normal week, then buy more of that item only.
What changes if your baby starts daycare?
Daycare adds a second set of needs: spare outfits that stay at the centre, labeled clothing and pieces that are quick to change. Ask the centre what it expects parents to supply before you shop. Two or three extra bodysuits and pants for the daycare bag usually beat a whole second wardrobe.
How Should You Shop by Season and Climate in Canada and the U.S.?
Shop for the weather your baby will live in during each size window, not the weather on the day you're shopping. A baby born in May and a baby born in November need very different 6–12 month wardrobes, even in the same city.
What do babies need for snowy winters?
In much of Canada and the northern U.S., plan on warm sleepwear, a couple of mid-weight layers and one piece of outerwear for stroller walks. Indoors, the AAP's Tips for Dressing Your Baby guidance says "a good rule of thumb is to dress the baby in one more layer of clothing than you are wearing." For a heated room, that usually means a bodysuit under a sleeper, not a snowsuit.
For outings in the first months, some families use a bunting bag over warm layers instead of a snowsuit; our guide to infant bunting vs. a one-piece snowsuit compares the two. Once your baby is sitting up in the stroller, a one-piece snowsuit becomes practical. Deux par Deux lists the Baby Original One Piece Puffy Snowsuit in black in sizes 6 months to 30 months/2T, with removable fleece-lined mittens and booties, and rates it to -30°C (-22°F). Compare more styles in one-piece snowsuits, and see our baby snowsuit buying guide for features by stage.
What changes in mild or warm climates?
In the Pacific Northwest, the southern U.S. or coastal B.C., you'll lean on bodysuits, lightweight sleepers and one or two jackets or fleece layers instead of heavy outerwear. The AAP guidance above notes that when it's warmer than 75°F (about 24°C), "you can reduce your baby's clothing to a single layer." Short sleeves, a sun hat and breathable sleepwear take up more of the list.
What if your baby is born at the change of seasons?
Buy for both ends. A September baby will spend the 0–3 month window in cool fall weather and the 3–6 month window in winter, so put long sleeves and footed sleepers at the top of the list. For layering decisions on in-between days, our layering guide for changing weather has outfit formulas.
What Size Baby Clothes Should You Buy, and How Far Ahead?
Buy mostly in the next one or two size windows and go lighter on newborn size. The AAP's layette page puts it bluntly: "Buy big," because babies "probably will outgrow 'newborn' sizes in a matter of days," and "even three-month sizes may be outgrown within the first month."
Two cautions keep "buy big" from going too far:
- Age labels vary by brand. Use the brand's size chart and your baby's weight and length, not the month on the tag.
- Some items shouldn't be sized up. For example, Deux par Deux notes that its Baby Original snowsuit "fits generously; sizing up is not recommended." Snug-fitting pajamas are also designed to fit close to the body.
Our baby clothes size guide from newborn to 24 months covers measuring, brand differences and how each garment type should fit, so we won't repeat it here.
Which Fabric and Fibre Labels Should You Check?
Read the fibre content percentages on the label, not just the product name. In Canada, the Competition Bureau's textile labelling requirements say that when a fibre makes up 5% or more of the total, the label must show its generic name and percentage, in both English and French, along with the dealer's name and address or CA identification number.
What the percentages tell you in practice:
- Cotton with a little elastane stretches over a baby's head and shoulders and recovers its shape.
- Synthetic knits and blends such as viscose, polyester and nylon behave differently in the wash, so check the care label next.
- Organic cotton is a fibre claim. Look for it in the fibre content and the brand's own product details.
Two examples from the shop show the range. Deux par Deux lists the Baby Organic Cotton One Piece Pajama in Pink Floral Print as 96% organic cotton and 4% elastane interlock. The brand lists its Knitted Romper in Dusty Pink as 50% viscose, 28% polyester and 22% nylon, with a relaxed fit. Both are knits, but they need very different laundry routines.
Which Closures Make Baby Clothes Easier to Use?
Choose closures that open where you need access: the diaper area and the front of the garment. The AAP's dressing guidance suggests garments that snap or zip "all the way down the front, instead of the back," and ones that "snap or zip down both legs to make diaper changes easier." Its layette page adds: "Make sure the diaper area of clothing has snaps or access to be able to change diapers."
- Front zippers are quick at 3 a.m. Deux par Deux lists a front zipper on its footed one-piece pajamas, and the Plush Sleep Sack in Off-White has a full-length zipper, a 100% polyester plush outer and 100% cotton lining, in sizes 0/6, 6/18 and 18/36 months.
- Bottom snaps on bodysuits let you change a diaper without undressing the top half.
- Organic Cotton Onesie Purple Floral Print: Deux par Deux lists a long-sleeve onesie with grow-with-me bottom snaps, made of 96% organic cotton and 4% elastane interlock, in sizes 3m to 24m.
- Shoulder buttons or envelope necklines widen the opening so the garment goes over the head more easily.
The AAP also recommends "loose-fitting sleeves" and stretchy fabric, and suggests avoiding "tight bindings around arms, legs, or neck."
What Should You Look For on the Care Label?
Look for how the item is washed and dried, and decide whether that fits your week. In the U.S., the Federal Trade Commission's Care Labeling Rule "requires manufacturers and importers to attach care instructions to clothing and some piece goods," and says labels "must be legible during the useful life of the product."
The romper and the bodysuits above show why this matters. Deux par Deux lists the knitted romper as "Hand wash cold · Do not bleach · Do not tumble dry," while the onesie three-pack is listed as "Machine wash cold · Do not bleach · Tumble dry low." If most of your baby laundry goes straight into the dryer, keep hand-wash pieces to a small share. The AAP's layette page makes the same point: "Clothing for all children of all ages should be washable and require little or no ironing." For detergent, stain and symbol help, see how to wash baby clothes so they last longer.
Which Baby Clothing Details Should You Avoid?
Skip drawstrings, cords, ties and anything that pulls tight around the neck. These are the clearest red flags in public guidance from both countries.
- Drawstrings and cords: Health Canada's Is Your Child Safe? guide says to "Remove drawstrings or cords on children's clothing," because "Children can strangle on drawstrings and cords that get caught around their neck or on other objects."
- Hood and neck drawstrings on outerwear: The U.S. Consumer Product Safety Commission states that hood and neck drawstrings on children's upper outerwear in sizes 2T to 12 "present a strangulation hazard."
- Ties, ribbons and tight bands: The AAP's layette page says to "avoid any clothing that pulls tightly around the neck, arms, or legs or has ties or cords."
- Loose buttons and threads: Health Canada advises parents to "check for loose buttons or other small parts as they could become a choking hazard."
Sleepwear has its own rules. Health Canada's guide notes that "loose-fitting cotton and cotton blend sleepwear for children do not meet flammability requirements," and its children's sleepwear guidelines add that "sleepwear designed for infants weighing up to 7 kilograms has a maximum size of 9 months." For how this plays out on labels and fit, read do kids' pajamas have to be flame retardant?
When Should You Buy Each Baby Clothing Item?
Buy the basics a few weeks before your due date, then shop one size window at a time. A timeline keeps you from buying too early or too late:
- Third trimester: a small newborn and 0–3 month rotation, two or three sleep sacks and a going-home outfit. Wash and put away a modest amount.
- First month: check how your baby fits 0–3 month sizes and fill gaps in 3–6 months.
- Around 3 months: buy most of the 6–9 month basics and plan the next season's outerwear.
- Around 6 months: add pants, rompers and play clothes for sitting and crawling, then plan 9–12 months.
- Four to eight weeks before a holiday or event: buy the special-occasion outfit in the size your baby is wearing now or will wear next.
Leave room for delivery time. The Jenni Kidz shipping policy says orders ship within 1 to 3 business days, with delivery estimates of 6 to 10 days in Canada and 5 to 10 business days to the U.S., and that delivery times may be longer during the holiday season. If you're on a deadline, our guide to ordering baby clothes with fast shipping explains how to work out the latest order date and when Canada Post Xpresspost helps.
How Do You Build a Baby Clothes Registry or Choose a Gift?
Spread registry clothing across sizes and seasons instead of stacking up newborn outfits. Guests tend to buy the smallest sizes, so the newborn drawer fills itself. Put the gaps you actually expect on the registry:
- Sizes 3–6 and 6–12 months, matched to the season your baby will reach them
- Multipacks of bodysuits and a few sleepers
- Sleep sacks in the next size range
- Outerwear for the first winter, if your baby will be under a year old when it arrives
If you're the guest, aim one size ahead of the baby's age and check the season that size will land in. A 6-month size in a summer print is a poor fit for a baby who'll be six months old in January. Our baby clothes gift guide lists ideas by occasion and age.
What Should You Check Before Ordering Baby Clothes Online?
Confirm the size, the garment type and the return conditions before you check out.
The Jenni Kidz return and refund policy sets out these conditions:
- Start a return within 14 days of receiving your item, from your orders page, and wait for approval. Items sent back without a return request aren't accepted.
- Items must be "unworn or unused, with tags, and in its original packaging."
- Return shipping is paid by the customer, and shipping costs are non-refundable.
- For a defective or incorrect item, send a photo and video within 48 hours of receiving the shipment.
A quick pre-checkout list:
- Is this the size your baby will wear in the season it's meant for?
- Is it a sleeper, a bodysuit, a romper or a set? Read the product details, not just the photo.
- Do the fibre content and care label fit your laundry routine?
- Does it fill a real gap in the checklist above?
How Do You Avoid Overbuying Baby Clothes?
Buy for the next size window only, and let real use decide the next order. Most overbuying comes from three habits: stocking up on newborn sizes, buying far-off sizes on sale and adding outfits because they're cute rather than needed.
- Cap the newborn drawer. Keep most early clothing in 0–3 months.
- Treat sales as a filter. A discount only helps if the size and season line up.
- Count cost per wear. A sleeper worn twice a week for three months earns its price faster than a one-time outfit.
- Keep tags on extras until your baby is in that size, so returns stay possible within the policy window.
For more ways to stretch a clothing budget, including hand-me-downs and when buying ahead pays off, see how to save money on kids' clothes without compromising quality. Ready to fill the sleep row of your checklist? Browse baby girls pajamas, baby boys pajamas and seasonal hats and mitts in winter accessories.
Frequently Asked Questions
How many baby clothes do you need for the first 3 months?
A practical starting point is the AAP layette list: 6 to 8 T-shirts or bodysuits, 3 to 4 snap onesies, 3 or 4 sleepwear sets, 3 sleep sacks, 2 sweaters, 2 hats and 4 pairs of socks. Wash more often and you can buy fewer; wash weekly and you'll need more.
Should I buy newborn or 0–3 month baby clothes?
Buy mostly 0–3 months and only a few newborn pieces. The AAP notes that babies probably will outgrow newborn sizes in a matter of days. Check each brand's size chart, since age labels vary.
When should I start buying baby clothes?
Buy a small newborn and 0–3 month rotation in the third trimester, then shop one size window at a time. Buy seasonal outerwear and special-occasion outfits closer to when your baby will wear them.
Is it smart to buy baby clothes in bigger sizes?
For everyday basics, buying one size window ahead usually works. Don't size up items designed to fit a certain way, such as snug-fitting pajamas, or outerwear the brand says already fits generously.
What should a baby wardrobe essentials checklist include?
Bodysuits, sleepers or footed pajamas, sleep sacks, sweaters or cardigans, hats, socks, one piece of outerwear per season and a few pants or rompers once your baby is more active. Special-occasion outfits are optional extras.
What should I check on a baby clothing label?
Check the fibre content percentages, the care instructions and the size. In Canada, fibres that make up 5% or more must be listed by name and percentage. Make sure the care routine fits your laundry habits.
Can I return baby clothes bought from Jenni Kidz?
Yes, within 14 days of receiving them, after requesting a return from your orders page. Items must be unworn or unused, with tags and in original packaging. Return shipping is paid by the customer.
Sources
- American Academy of Pediatrics, HealthyChildren.org: Registering for Baby Clothes (last updated March 12, 2021)
- American Academy of Pediatrics, HealthyChildren.org: Tips for Dressing Your Baby (last updated June 17, 2016)
- Health Canada: Is Your Child Safe? (Children's Clothing section) (modified September 14, 2026)
- Health Canada: Guidelines for the flammability requirements of the Children's Sleepwear Regulations (January 2026)
- U.S. Consumer Product Safety Commission: Drawstrings in Children's Upper Outerwear
- Competition Bureau Canada: Labelling textile requirements in a nutshell (modified January 19, 2022)
- U.S. Federal Trade Commission: Clothes Captioning: Complying with the Care Labeling Rule
