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With prices starting from £3, they won't break the bank either. And there's plenty to choose from, with wintry knitted onesies and festive elf designs, too.
There's a very cute 'little pudding' jumper, which would make an adorable Christmas Day outfit if you ask us.
"Get Santa's little helper involved in the season's festivities with this adorable Christmas dog onesie!" the description reads.
"A novelty Christmas gift for your pet that they'll love to wear while they wait for jolly Saint Nick."
One of our personal favourites is a £4 knitted penguin jumper - which features white buttons and a blue and grey penguin design. There's also a pink and grey style for £3 which we're obsessed with!
And the reindeer onesie is equally cute, featuring a reindeer face and sparkly silver baubles.
The Christmas styles don't stop there, there's also a selection of festive dog costumes, including a reindeer, penguin, Santa and elf style priced at £6. Each features a cosy hood or tiny Santa hat.
And if you want to be extra festive, B&M is also selling Christmas dog harnesses, so you can get into the holiday spirit while walking your pup, too.
Posting about the Christmas jumper range, B&M shared a snap from one of their shoppers - and we can't handle the cuteness!
"There is no better way to start a Monday morning than looking at puppies in Christmas Jumpers," they wrote.
"We've got a huge range of dog clothing in store!! WHO's got a pup who'd look cozy in these?!"
Just look at how adorable this sausage dog is!
There is no better way to start a Monday morning than looking at puppies in Christmas Jumpers:dog:.
We've got a huge range of dog clothing in store :dog2:!!
Thanks for sharing your photo https://t.co/fPcwMoBaCJ :camera_with_flash:
WHO's got a pup who'd look cozy in these?! pic.twitter.com/K9IwhfxE6v
- B&M Stores (@bmstores) November 30, 2020
We've got a feeling we'll be spoilt for choice over this lot. You can shop the full range here.
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