A Christmas party can be a great excuse to show off your holiday spirit, so why not consider wearing something that reflects the festive atmosphere? A cozy sweater with some fun holiday patterns or a festive shirt could be a great choice, especially if you plan to spend the evening at home with family or close friends. If you're planning to attend a more formal event, consider something that is still seasonal and playful, such as a red or green dress or a sparkly blouse with some holiday accents.