Held every year in aid of Save the Children, the campaign invites schools and workplaces across the country to join in with donning their festive knits for a good cause. This year marked on Thursday, December 8, youngsters across Sunderland showed off their best Christmas outfits, while many were raising money for charity, too.
You can share your own picture with us on Facebook here, and check out some of our Christmas jumper stars below. Thank you to everyone who has contributed a photograph.
9. Accessories
Joe, age 8, getting into the festivities with a Christmas hairband and jumper. Photo: Bobbie Jo Duggan
10. Stormtroopers
May the force be with Lincoln, age 5, this Christmas. Photo: Lizzie Calvert
11. Reindeer
Emmie-Rosie, age 15 months, ready to help Santa this Christmas. Photo: Leonie Angela
12. Merry Christmas
Alyssia looking very festive - this could be a Christmas card! Photo: Carolyn Mckenzie