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.
5. Picture perfect
Doesn't he look smart! Ellis Brooke is the perfect gent for Christmas Jumper Day. Photo: Lisa Ann Hutchinson
6. 'Tis the season
A cheeky face from Alfie Moore on Christmas Jumper Day. Photo: Jordan Lee Moore
7. Santa's helper
Hayden poses for a festive photo on Christmas Jumper Day. Photo: Carolyn Mckenzie
8. Smart
A personalised jumper for two-year-old Taylor. Looking good! Photo: Bobbie Jo Duggan