Ugly Sweater Day is celebrated every third Friday of December in the United States, where people exchange their casual clothing for festive, often humorous, ugly sweaters. Participants may either find a unique sweater or create their own, contributing to the lighthearted spirit of the day. The holiday encourages laughter and fun, as individuals showcase the most outrageous and tacky designs. The tradition of wearing ugly sweaters has evolved from accidental fashion mishaps to a deliberate celebration, with parties and competitions becoming popular events. These gatherings often aim to raise money for charitable causes, reflecting the community spirit associated with the holiday. Overall, Ugly Sweater Day has become a beloved seasonal highlight, inviting creativity and camaraderie among participants.