To dress for a Christmas party, you should consider the theme and the type of event. If the party is formal, opt for a suit or a cocktail dress in red, green, or white. If the party is casual, consider wearing something festive like a sweater with holiday motifs or a fun accessory like a Santa hat or reindeer antlers. Whatever you choose, make sure to add some sparkle with jewelry or festive makeup. Have fun and enjoy the holiday spirit!