An ugly sweater contest is a fun event where participants wear intentionally unattractive or humorous sweaters, often featuring festive designs. These contests are popular during the holiday season, especially around Christmas, and encourage creativity and laughter among friends, family, or coworkers. Judges or attendees typically vote for the most outrageous sweater, and prizes may be awarded for categories like "ugliest," "most creative," or "best theme." The contests can take place at parties, community events, or even online, fostering a lighthearted atmosphere and celebrating the quirky side of holiday fashion.