The day is run and organised by Save the Children, and it has raised over £27m since its launch in 2012.

This year - Friday, December 10 - is the 10th Christmas Jumper Day, so the charity is celebrating a major milestone.

It could not be more simple, all you have to do is make sure you wear a Christmas jumper on December 10.

We would like readers to join in the fun by sending in photos of themselves in their Christmas jumpers.

Oxford Mail editor Pete Gavan said: “Please make sure you send us a picture of what you are wearing on Christmas Jumper Day.

“We want to see you in your finest festive tops and we’ll be running the best of the pictures in a special supplement next week."

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A spokesman for Save the Children said: "You don’t even need a new jumper.

"You can dig out last year’s, take a boring old sweater and add some tinsel, or get one from a charity shop.”

You are also encouraged to donate £2 to Save the Children – or £1 if you are at school.

Lots of Christmas jumper wearers go solo so you don’t have to be part of a group.

The charity has also created festive crafting kits to help people upcycle their jumpers at home.

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The kits are £3 and available in Save the Children charity shops and online from savethechildren.org.uk.

All the profits from every purchase will go towards helping children get the food, healthcare and education they need to see the wonder in the world.

In total 2,487,046 people are set to take part through various groups and societies.

But the total number taking part is likely to be even higher, and anyone can join in.