An ugly sweater party is a festive gathering where guests wear intentionally unattractive or humorous sweaters, often featuring bright colors, quirky patterns, or holiday-themed designs. These parties typically take place during the winter months, especially around the Christmas season, and are meant to celebrate the fun and lighthearted spirit of the holidays. Participants often engage in activities like games, contests for the ugliest sweater, and festive food and drinks. The trend has gained popularity in recent years, with many people sharing their outfits on social media platforms like Instagram and Facebook, making it a fun way to connect with friends and family during the holiday season.