Christmas Jumper Day is an annual fundraising event organised by Save the Children on the second Thursday of December, which is December 11th this year.
The idea is for people wear festive jumpers to work or school and donate money to help children in need around the world.
The event, which began in 2012, aims to raise money for children facing issues like poverty, war, and hunger, and is celebrated by millions of people in the UK and beyond.
All you have to do is wear your festive jumper to school, work, or with friends and family and make a donation to Save the Children.
The money goes towards helping children in the UK and around the world to stay safe, healthy and in education.
Visit the Save the Children website to register your event.
