Quick answer: Matching sibling Christmas pajamas are coordinating holiday pajamas that brothers and sisters wear on Christmas Eve and Christmas morning. The easiest way to match kids of different ages is one print in different styles: a zipper or ruffle romper for babies and a two-piece set for older kids. The Poppy Kids Co. Christmas collection offers bamboo pajamas in sizes newborn to 9/10, in prints like Candy Cane, Starry Tree, Holly Jolly, and Christmas Crew.
There is something about little ones padding down the stairs on Christmas morning in matching pajamas that makes the whole season feel complete. Here is where the tradition comes from, why families love it, and how to find the right matching set for every child at Poppy Kids Co.
Key takeaways
- New pajamas on Christmas Eve is a long-standing family tradition, and matching sibling sets are one of its most popular forms.
- Match siblings of different ages by choosing one print in different styles: rompers for babies, two-piece sets for older kids.
- Poppy Kids Co. Christmas pajamas are made from 95% bamboo viscose and 5% spandex and come in sizes newborn to 9/10.
- Christmas Eve 2026 is Thursday, December 24. Order early, since popular prints and sizes sell out before the holiday shipping cutoff.
What Is the Christmas Eve Pajama Tradition?
The Christmas Eve pajama tradition is a family custom where children open one gift the night before Christmas, and that gift is a new pair of pajamas. Kids wear them to bed on Christmas Eve and into Christmas morning, so they are dressed for opening presents and family photos.
Over the years, the tradition grew into matching pajamas. Families began choosing the same print for siblings, then for the whole family. Today, matching Christmas pajamas are a staple of holiday cards, Christmas morning photos, and cozy movie nights all December long.
Why Do Families Choose Matching Sibling Christmas Pajamas?
Families choose matching sibling pajamas because they make children feel connected and make holiday photos look pulled together with no extra effort.
- Belonging: Big siblings feel proud to match the baby, and little ones love looking like their big brother or sister.
- Photos: Matching prints make every Christmas morning picture feel coordinated.
- Memories: Lined up year after year, matching pajama photos become a record of how much your children have grown.
- Simplicity: One print for every child means one easy decision for parents.
Popular Matching Christmas Pajama Styles for Siblings
The most popular way to match siblings is one Christmas print in different styles for each age. Zipper rompers and ruffle rompers work best for babies, and two-piece pajama sets work best for toddlers and big kids. Here is how each style works and the Poppy Kids Co. sets to shop.
| Popular style | Best for | Poppy Kids Co. pick |
|---|---|---|
| Zipper rompers | Babies, easy diaper changes | Blue Candy Cane Zipper Romper, Christmas Crew Zipper Romper, Green Starry Tree Zipper Romper (NB to 18-24m) |
| Ruffle rompers | Baby girls who want a little extra sweetness | Pink Candy Cane Ruffle Romper, Holly Jolly Ruffle Romper, Starry Tree Ruffle Romper (NB to 18-24m) |
| Two-piece pajama sets | Toddlers and big kids | Pink Candy Cane PJ Set and Blue Candy Cane PJ Set (2T to 9/10), Holly Jolly PJ Set, Christmas Crew PJ Set (2T to 7/8) |
| Brother and sister colorways | Siblings who want their own color in the same print | Pink and Blue Candy Cane, or Starry Tree and Green Starry Tree PJ sets |
| Pajamas that match a smocked outfit | Christmas morning in PJs, Christmas photos in smocking | Candy Cane Ribbons PJ Set and Ruffle Romper, matching the smocked Candy Cane Ribbons Dress and Bubble |
Best matching sibling sets at Poppy Kids Co.
- Candy Cane (brother and sister): The Pink Candy Cane PJ Set and Pink Candy Cane Ruffle Romper for girls, with the Blue Candy Cane PJ Set and Blue Candy Cane Zipper Romper for boys. The PJ sets run up to 9/10, so older siblings can match too.
- Starry Tree: The Starry Tree PJ Set and Starry Tree Ruffle Romper, plus the Green Starry Tree PJ Set and Green Starry Tree Zipper Romper.
- Holly Jolly: The Holly Jolly PJ Set for big kids and the Holly Jolly Ruffle Romper for baby.
- Christmas Crew: The Christmas Crew PJ Set and Christmas Crew Zipper Romper.
- Merry and Bright: The Merry and Bright PJ Set and Merry and Bright Ruffle Romper.
Matching smocked Christmas outfits for siblings
For Christmas photos, church, and parties, pair smocked pieces the same way. The Holly Santa Dress and Holly Santa Bubble coordinate with the Holly Boys' Polo or the Smocked Santa T-Shirt for brother. The Festive Bows Dress, Winter Bloom Dress, and Floral Wreath Dress each have a matching bubble for baby sister.
Shop the full Christmas collection
How to Start a Matching Christmas Pajama Tradition
- Build a Christmas Eve box. Tuck the new pajamas into a box with a holiday book, hot cocoa, and a small treat. Let the kids open it after dinner on Christmas Eve.
- Take the same photo every year. Line the kids up in the same spot, like the stairs or in front of the tree.
- Make a night of it. Pair the new pajamas with a Christmas movie, a drive to see the lights, or cookies for Santa.
- Save a favorite pair. Keep one set from each year in a keepsake box, or pass them down to a younger sibling or cousin.
How Do Poppy Kids Co. Christmas Pajamas Fit?
Poppy Kids Co. bamboo pajamas are made to fit snugly and run generously for longer wear. Two-piece PJ sets come in sizes 2T to 7/8 or 9/10 depending on the print, and zipper and ruffle rompers come in newborn to 18-24 months. Check the size charts before ordering.
How Do You Wash Bamboo Pajamas?
Wash bamboo pajamas in cold water on a delicate cycle with minimal detergent and only with other bamboo items. Hang or lay flat to dry. For the first wash, use a color catcher to keep bright Christmas prints from bleeding.
Matching Sibling Christmas Pajamas: Frequently Asked Questions
How do you match siblings of different ages for Christmas?
Choose one Christmas print and buy it in a different style for each child. At Poppy Kids Co., a baby can wear the Holly Jolly Ruffle Romper while a big sister wears the Holly Jolly PJ Set.
What are the best matching Christmas pajamas for a brother and sister?
Pajamas offered in two colorways of the same print work best. The Poppy Kids Co. Pink Candy Cane PJ Set and Blue Candy Cane PJ Set match without being identical.
What are Poppy Kids Co. pajamas made of?
Poppy Kids Co. pajamas are made from bamboo viscose with a little spandex for stretch (95% bamboo viscose, 5% spandex). The fabric is soft, breathable, and gentle on sensitive skin.
What sizes do Poppy Kids Co. Christmas pajamas come in?
The Christmas collection runs from newborn to 9/10. Rompers cover newborn to 18-24 months, and two-piece sets cover 2T to 7/8, with Candy Cane sets going up to 9/10.
When should you give kids their Christmas pajamas?
Most families give them on Christmas Eve so kids can sleep in them and wake up dressed for Christmas morning. Some families give them at the start of December so the pajamas get worn all month.
When should I order matching Christmas pajamas?
Christmas Eve 2026 is Thursday, December 24. Order by early December for the best selection of prints and sizes, and check the Poppy Kids Co. site for this year's holiday shipping cutoff.