A “Christmas Ugly Sweater” is a festive and humorous piece of clothing typically worn during the holiday season, especially at holiday-themed parties and gatherings. These sweaters are known for their intentionally tacky and over-the-top designs, often featuring bold colors, holiday-themed patterns (such as reindeer, snowflakes, or Christmas trees), and sometimes even 3D embellishments like bells or tinsel. The charm of a Christmas Ugly Sweater lies in its playful and lighthearted approach to celebrating the holiday season.