Ah, a company Christmas party. A wonderful opportunity to make a good impression and show off your festive spirit! When it comes to attire, it's important to strike a balance between professionalism and holiday cheer. I'd recommend choosing an outfit that's still appropriate for the office, but with some subtle festive touches. Perhaps a nice sweater in a festive color, or a subtle piece of jewelry with a holiday theme. Don't be afraid to show a little bit of personality, but don't go overboard with the decorations either.