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Xmas pyjamas are often the first festive gift a child opens, and they stay in rotation from Christmas Eve to New Year. A set that fits well and feels soft becomes the one your child reaches for every night.

We stock Christmas clothing for newborns through 7 years, so this guide focuses on those ages. Here is how to choose the right size, fabric, and safety label before you buy.

What to Look For in Xmas Pyjamas

A festive print catches the eye, but comfort decides whether your child actually sleeps in it. We always advise parents to check five details before choosing a print:

• Fit: One-piece styles suit babies, while two-piece sets suit children who are potty training or dressing themselves.

• Fabric: Choose breathable cotton for warm rooms, stretch knits for active toddlers, and fleece only for cold bedrooms.

• Fastenings: Poppers and pull-on designs make night-time changes quicker than small buttons.

• Trims: Skip loose bows, pom-poms, and detachable pieces on anything worn to bed.

• Labels: Check the flammability and care labels, which we explain below.

Each of these details shifts with your child's age, so start there.

Choosing Xmas Pyjamas by Age

Babies (0–12 Months)

For babies, one-piece styles work better than two-piece sets because nothing rides up overnight and nappy changes stay simple. The Christmas Newborn Baby Jumpsuit is a soft polyester knit with a pullover O-neck, sized from newborn to 12 months. If your home runs warm, the Red Santa Print Bodysuit is made from 100% cotton for babies up to 1 year.

For photos, add a festive hat or headband, then take it off before any nap or night sleep. Loose items have no place in a baby's cot.

Toddlers (1–3 Years)

Toddlers kick off blankets and roll all night, so stretch and warmth matter most. The Christmas Reindeer Print Jumpsuit uses a stretchy polyester-spandex blend in sizes up to 18 months, which suits younger toddlers still in nappies. The Christmas Baby Sweatshirt Set covers 6 months to 4 years, but keep it for daytime festivities rather than bedtime.

Add Non-slip Christmas Baby Socks in elk, Santa, or tree designs for ages 0–3. Excited toddlers racing to the tree on Christmas morning need grip on hard floors.

Kids (3–7 Years)

Older children want a say in the Xmas pyjamas they wear, and many prefer a grown-up two-piece set. The Girls Christmas Pajamas Set pairs a long-sleeve button-up top with a bow print and matching trousers in red or green. Two-piece sets also make night-time toilet trips easier for newly independent children. Browse more styles in our 3–7 years collection.

Once you know the style, fabric decides how well your child actually sleeps.

Cotton, Fleece, or Polyester: Which Fabric Is Best?

We prioritise one simple rule: match the fabric to the bedroom, not the print. Cotton lets heat escape, which makes it the strongest choice for homes with central heating or for a child whose sleeping temperature you do not know. Brushed cotton and flannel feel warmer without the bulk of fleece.

Polyester-spandex knits stretch with movement, hold bright prints, and dry quickly, but they breathe less than cotton. Fleece is the warmest option and works best in cold bedrooms.

Babies regulate body temperature less efficiently than adults, so adjust layers to the room rather than the season. Our winter layering and TOG guide and our guide on how to dress your baby for sleep in every season explain exactly how.

Fabric also affects fire safety, which is why the label deserves a closer look.

Safety Labels to Check Before You Buy

Many Xmas pyjamas use brushed fabrics, glitter prints, and appliqués, so the label matters as much as the design. The rules depend on where you live.

In the UK, children's pyjamas and babies' garments must be labelled to show whether they meet the BS 5722 flammability standard. Items that fail it carry a red "KEEP AWAY FROM FIRE" label, while compliant items can state "LOW FLAMMABILITY TO BS5722" in black.

In the US, children's sleepwear above size 9 months and up to size 14 must be flame-resistant or snug-fitting.

Wherever you shop, three habits keep bedtime safer:

• Keep children away from candles, fireplaces, and heaters, especially in pyjamas labelled "Keep away from fire."

• Choose a close fit for sleep, because loose garments catch fire more easily.

• Remove hats, hoods, headbands, and bows before bed.

A close fit only works when the size is right.

How to Get the Size Right

Age labels on Xmas pyjamas are a starting point, not a guarantee. Every listing on our site shows chest, length, and weight ranges, so compare them with your child's current measurements.

• Measure in the same week you order, because babies grow quickly in the first year.

• Allow room for a nappy in one-piece baby styles.

• Size up only for daywear and loungewear; sleepwear should sit close to the body.

• Order early: we dispatch within 2 business days, and you can request an exchange within 48 hours of delivery.

With the size settled, you can plan the best part: giving them.

Xmas Pyjamas for the Christmas Eve Box

A Christmas Eve box is usually handed over towards the end of the day. New pyjamas make a natural centrepiece because they encourage children to get ready for bed. We have seen firsthand that pairing pyjamas with a few small, useful extras makes the box feel special without adding clutter.

Add festive socks, a soft toy from our Kids Toys collection, and a bow headband or clips from our Baby Fashion collection for the morning photos. For coordinated family photo ideas, read our guide to funny family Christmas pajamas.

Care Tips That Keep Prints Bright

Wash festive sets cold at 30°C on a gentle cycle, turn printed or glitter pieces inside out, and tumble dry low to limit shrinkage. If a label shows a flame-resistant treatment, follow its washing instructions exactly: never wash above 50°C, and check that your detergent is suitable.

Conclusion

The best Xmas pyjamas fit your child's age, suit your home's temperature, and carry a clear safety label. Choose one-piece styles for babies, stretch knits for toddlers, and two-piece sets for older kids. Measure before you order, remove accessories before bed, and shop our Christmas Gifts collection early enough to exchange sizes.

Why Choose Us

Parents shop PAMU8 for Xmas pyjamas and festive baby outfits because we focus on fit, fabric, and practical detail.

• Christmas styles for newborns through 7 years

• Chest, length, and weight ranges on every listing

• Full fibre content on each product page

• Sleepwear supplied without loose ribbons or detachable trims

• Orders dispatched within 2 business days

Frequently Asked Questions

Is there a difference between Xmas pyjamas and Christmas pyjamas?
No. Xmas is an informal short form of Christmas, so both terms describe the same festive sleepwear.

Should I buy baby Christmas pyjamas a size up?
For daywear, one size up gives room to grow. For sleep, match your baby's current measurements so the fit stays close to the body.

Are fleece pyjamas too warm for babies?
Fleece suits cold bedrooms. In a centrally heated home, choose cotton or a light knit and adjust layers to the room temperature.

What does "Keep away from fire" mean on pyjamas?
It is a UK warning that nightwear failing the BS 5722 low-flammability standard must carry, although compliant items can show it too. Either way, keep children away from open flames and heaters.

When should children get their Xmas pyjamas?
 Many UK families give them in a Christmas Eve box, so children wear them that night and on Christmas morning. Order by late November to leave time for exchanges.