There are two main types of Elf costume, the tall Dungeons & Dragons style elves and the small Christmas elves that help out Santa Claus at the North Pole. Costumes for the taller elves typically involve various styles of battle armor, elegant robes or sometimes Robin Hood style clothing. Christmas Elf costumes are always green in color with white or red trim and a bobble hat. It is also common to wear red and white striped stockings or socks for a Christmas Elf costume. For all Elf costumes you will need to wear large pointy Elf ears.