Kids' Pyjamas

At SillySanta you'll find over 35 matching styles of kids pyjamas – also known as kids' PJs or children's nightwear – rated 4.9 out of 5 based on over 1100 reviews. Match the whole gang for this year's Christmas photo! From cosy Red and Blue Flannel Christmas Pyjamas to playful Gingerbread Overall sets and licensed designs featuring Snufkin, Moomintroll and Little My, there's a pair for every little one in our collection.

Kids pajamas that match the whole family

The whole point of our children's range is that it doesn't stand alone. Nearly every kids' print has a grown-up twin, so when you're coordinating the family's pajamas for the big morning, you can put your toddler in the same gingerbread set as dad and your eight-year-old in the same Hohoho print as mom. The Christmas-morning photo with everyone in matching prints is the reason these sell out, and it's why we size the kids' versions to sit right alongside the adult cuts rather than treating them as an afterthought.

Coordinating across siblings is just as easy. If one child loves a character and another wants a plain festive print, they'll still read as a set in photos because the color families line up: reds with reds, the soft Christmas-pattern blues together. You don't have to put everyone in the identical design for it to look like a matching family.

Characters and prints for every kid

The range is deliberately broad, so there's something for the child who wants a specific character and the one who just wants something cheerful and warm.

Moomin character sets

Our Moomin pajamas are officially licensed and exclusive to SillySanta, with Snufkin, Moomintroll and Little My all sized for kids. These are the ones to reach for when a child has a favorite character rather than a favorite holiday, and because they're not strictly Christmas prints they carry on being worn long after the tree comes down.

Christmas prints and licensed favorites

On the festive side there's plenty of choice: gingerbread sets, red and blue flannel pairs, the Christmas Scenery and Christmas Pattern prints, the cheeky Hohoho design, knit-look prints that mimic a cozy Christmas sweater, and The Grinch for the household that likes its holidays a little grumpy. Best sellers like the Kids' Red Christmas Pattern set and the Kids' Green Hohoho set give you a sense of the range, and most of these have a matching adult version waiting in the same print.

Overalls and onesies, made for wriggly toddlers

Several of the Christmas prints come as a one-piece overall as well as a two-piece set, and that's a genuinely useful option for younger children. There's no top to ride up in the night and no separate bottoms to lose, which makes the overall styles quick to get on a toddler who would rather be doing anything else. The Kids' Red Christmas Pattern Overall and the Gingerbread Overall are good examples of the one-piece cut.

Onesies sit alongside them and lean a little cozier. These are made from a soft fleece rather than the cotton blend, so think of the Kids' Reindeer Onesie, the Kids' Candy Cane Onesie or the all-year Teddy Bear and Unicorn onesies as the choice for a drafty house or a child who runs cold. Between the overalls and the onesies, there's an easy-on option for almost any age.

Fabric, comfort and how the kids pajamas wear

Most of the two-piece sets are a super-soft cotton blend, typically 95% cotton with 5% elastane, so there's a little stretch for climbing into bed and rolling around the next morning. Some sets are 100% cotton, and the onesies are a cozy fleece. It's a mix chosen for comfort against the skin and for holding its shape through a busy season of wear, washing and hand-me-downs. The sets are cut to sit close to the body rather than loose and flowing, which is the snug fit that pediatric sleepwear-safety guidance points to.

Caring for them is straightforward: a gentle machine wash at 30 to 40°C with similar colors, no tumble drying or bleach, and a low-temperature iron if you want them crisp for the photo. Treated that way, a set that started on your eldest has a good chance of fitting the next child down a year or two later.

Sizing by age

Our children's sizing runs by age rather than abstract numbers, which makes it easy to pick without a tape measure. The bands cover the usual children's range, with examples like 2–4 Years (98/104), 6–8 Years (122/128) and 8–10 Years (134/140). As a rule, choose the size your child would normally wear, and if they're between two bands, size up: a touch of room is more comfortable for sleeping and buys you a little longer before they outgrow the set. With more than 700,000 Christmas pajamas sold across the family range, the age bands are well tested against how real children actually fit them.