Chris Boyd and Jordan Birch from Vancouver say they helped start the trend about 11 years ago when they set out to organize the "cheesiest, most festive party imaginable."
They have held one every year since, raising thousands of dollars for charity.
This year they even convinced the Vancouver mayor to proclaim Dec. 21 as Ugly Christmas Sweater Day.
Got an ugly sweater you'd like to share? Upload them here:
9NEWS HOLIDAY GUIDE
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