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    Dogs' Green Retro Reindeer Christmas Sweater
    COMING SOON
    Dogs' Green Retro Reindeer Christmas Sweater
    Dogs' Green Retro Reindeer Christmas Jumper
    £15.95
    Cats' Red Retro Reindeer Christmas Sweater
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    Cats' Red Retro Reindeer Christmas Jumper
    £15.95
    Cats' Green Retro Reindeer Christmas Sweater
    COMING SOON
    Cats' Green Retro Reindeer Christmas Sweater
    Cats' Green Retro Reindeer Christmas Jumper
    £15.95
    Dogs' Red Christmas Pattern Christmas Pyjamas
    COMING SOON
    Dogs' Red Christmas Pattern Christmas Pyjamas
    Dogs' Red Christmas Pattern Christmas Pyjamas
    £15.95
    Cats' Red Christmas Pattern Christmas Pyjamas
    COMING SOON
    Cats' Red Christmas Pattern Christmas Pyjamas
    Cats' Red Christmas Pattern Christmas Pyjamas
    £15.95
    Dogs' Blue Christmas Pattern Christmas Pyjamas
    COMING SOON
    Dogs' Blue Christmas Pattern Christmas Pyjamas
    Dogs' Blue Christmas Pattern Christmas Pyjamas
    £15.95
    Cats' Blue Christmas Pattern Christmas Pyjamas
    COMING SOON
    Cats' Blue Christmas Pattern Christmas Pyjamas
    Cats' Blue Christmas Pattern Christmas Pyjamas
    £15.95

    At SillySanta you'll find over 5 styles of dog Christmas jumper – also known as a Christmas jumper for dogs or a dog xmas jumper – rated 4.9 out of 5 based on over 250 reviews. Kit out your pup so the whole family matches on this year's Christmas card! From the Dogs' Green Retro Reindeer Christmas Jumper to cosy Dogs' Red Christmas Pattern pyjamas, there's a festive look for every four-legged friend in our collection.

    Twin your pet with the family: the dog christmas jumper that completes the photo

    The whole point of a festive jumper for your pet is the moment everyone is dressed up together. Our pet range is designed to match the rest of the SillySanta Christmas collection, so the dog or cat in the corner of the picture isn't the odd one out, they're part of the set. Pop a retro reindeer jumper on the dog, the matching style on the cat, and line everyone up for the card. That coordinated, mix-and-match look is the thing people remember when the photos come back.

    It's the small detail that makes a Christmas morning picture feel finished. Whether the family is in matching pyjamas or themed jumpers, having the pet in the same story ties it all together.

    The pet range: jumpers, pyjamas, dogs and cats

    We stock two main groups across the 8 styles:

    • Christmas jumpers in our retro reindeer design, for dogs and cats, in green and red. A classic festive knit-look layer for the day itself.
    • Christmas pyjama sets for dogs and cats, in red and blue. Cosier and softer, made for lazy Christmas-morning lounging and present-opening.

    Because dogs and cats are both covered, a two-pet household can match the whole crew. The "mix and match with your pet" idea runs through the range: pick the colour and the format that suits your home, and pair it with the matching human pieces for a fully coordinated look.

    How to measure your dog or cat for the right size

    Getting the size right is the difference between a jumper your pet happily wears and one that gets wriggled out of. It takes two quick measurements and a soft tape (a piece of string against a ruler works fine):

    • Length: measure along the back, from the base of the neck (where a collar sits) to the base of the tail.
    • Girth: measure around the widest part of the chest, just behind the front legs.
    • Neck: measure around the base of the neck so the opening sits comfortably.

    The fit is regular, so compare your numbers to the size guide on each product page and go from there. If your pet falls between two sizes, size up. A slightly roomy jumper is comfortable and easy to move in; a tight one won't get worn twice. Long-bodied breeds (think dachshunds) are especially worth measuring by length rather than guessing from weight.

    Comfort and materials: soft, comfy and cosy on cold walks

    These are made to be worn, not just photographed. The jumpers are 100% acrylic for a soft, warm knit-look layer, and the pyjama sets are 95% cotton with 5% elastane, so they have a gentle bit of stretch that moves with your pet. Both are super soft and comfy, with a regular fit that isn't fussy to get on.

    There's a practical upside too. Smaller and short-haired pets, the ones that shiver on a frosty morning, genuinely feel the cold, and an extra layer keeps them cosy on a winter walk. So the festive look earns its keep well beyond the photo.

    How to wash a dog christmas jumper

    Keeping these looking good is simple, just treat them gently. As a general rule across the range: a cool machine wash at a maximum of 30°, washed with similar colours, and no tumble drying. Skip the bleach and the dry cleaner. Care does vary slightly by piece, some can take a low-temperature iron while others are best dried flat, so always check the care label on your specific item before you wash or press it.

    Delivery, returns and reassurance

    Ordering for the family photo is low-risk with us. UK delivery is free on orders over £49.99, and orders typically arrive within 2 to 4 days, so there's time to try sizes before the big day. If something isn't right, our 100-day returns window gives you plenty of room to swap or send it back. More than 500,000 happy customers have shopped with SillySanta, which should make a first pet order feel like an easy one.

    Dog christmas jumper – quick summary
    • 8 festive jumper and pyjama styles for adults
    • Single price of £15.95 across the collection
    • Rated 4.9/5 from 289 reviews
    • Jumpers are 100% acrylic; pyjama sets are 95% cotton, 5% elastane
    • Sizes XS to XXL, plus Medium cat and Big cat
    • Cool machine wash at 30° maximum, no tumble drying

    FAQ

    How do I measure my dog or cat for the right size?

    Take two key measurements with a soft tape or a length of string against a ruler. First, the back length from the base of the neck (where a collar sits) to the base of the tail. Second, the girth around the widest part of the chest, just behind the front legs. Compare those to the size guide on the product page. If your pet falls between two sizes, size up for an easy, comfortable fit.

    Can my pet wear a Christmas jumper all day, and is it comfortable?

    Yes, as long as the size is right and your pet seems happy in it. The jumpers are soft acrylic and the pyjama sets have a little stretch, so they move with your pet rather than restricting them. Smaller and short-haired pets often feel the cold, so an extra layer can actually keep them cosier on a winter walk. Keep an eye on your pet at first and take it off if they seem bothered or want a rest.

    Do you have matching Christmas outfits for dogs and cats?

    We do. The pet range covers both dogs and cats across 8 styles, in red, green and blue, so a two-pet household can match the whole crew. It's also designed to coordinate with our human Christmas range, so everyone, pets included, can twin for the family Christmas card.

    How do I wash a pet Christmas jumper or pyjama set?

    Keep it gentle. As a general rule, use a cool machine wash at a maximum of 30°, wash with similar colours, and don't tumble dry. Avoid bleach and dry cleaning. Ironing and drying advice varies a little between pieces, so always check the care label on your specific item before washing or pressing it.

    What's the difference between the jumpers and the pyjama sets?

    The jumpers are a retro reindeer knit-look layer in 100% acrylic, made for the festive look on the day. The pyjama sets are 95% cotton with 5% elastane, giving a softer, stretchier feel that's lovely for relaxed Christmas-morning lounging and present-opening. Many owners pick the jumper for the photo and the pyjamas for the cosy hours in between.

    Free shipping above £49.99

    2-4 day delivery

    500K+ happy customers

    Will you be our next?

    100-Day return policy

    No questions asked!