It's all been set up by BorrowMyDoggy, an online community for dog lovers, who joined forces with the charity to break the world record for most dogs wearing Christmas jumpers in one place and most importantly, to help raise cash for Save the Children's Jumper Day fundraiser.
Best part about the whole thing? Every single donation made will go straight to Save the Children’s great cause.
Snapping starts from 1pm, and the world record attempt will start precisely at 2.30. Snacks and treats for all four-legged friends will also be provided.