For Christmas dinner, you can wear anything that makes you feel comfortable and festive. Some traditional choices include a red or green sweater, a festive blouse or dress, or a holiday-themed outfit. If you prefer a more casual look, you could wear a comfortable sweater or flannel with jeans or leggings. Whichever outfit you choose, make sure to add a touch of holiday spirit with accessories such as a festive scarf, a jingle bell necklace, or a Christmas-themed hair clip. Have fun with your outfit and enjoy the holiday spirit!