Why not dress up your little ones in one of our Elf on the Shelf Costumes this Christmas? We've got super cute costumes for girls and boys, and this makes for the perfect alternative to a generic themed Christmas outfit. The Elf on the Shelf is a children's picture book, written by Carol Aebersold and her daughter Chanda Bell in 2005. The book is written in rhyme, and tells the story of Santa Claus, who knows who is naughty and nice. Dress your kids up this season in one of our official outfits.