Yes, that's right. Why not dress up as your favourite Elf, Santa or even Rudolph for Christmas? Here is our list of the best Christmas Halloween Costumes. You only get once a year to go outside in costume, why not use it to show the world your Christmas Spirit! Santa  This is an easy one, there are lots of great costumes for adults, like the one above from Hayley Jayne Designs and even options for kids - like this cute option from Partytask Boutique. Of course, if you would prefer Mrs. Claus, that's an option too, see this stunning costume…