Matt Haig 
Father Christmas and Me [EPUB ebook] 

A BOY CALLED CHRISTMASSOON TO BE A MAJOR MOTION PICTURELet the battle for Christmas begin . . .It isnt always easy, growing up as a human in Elfhelm, even if your adoptive parents are the newly married Father Christmas and Mary Christmas.For one thing, elf school can be annoying when you have to sing Christmas songs every dayeven in Julyand when you fail all your toy-making tests. Also, it can get very, very cold. When a very jealous Easter Bunny and his Rabbit Army launch an attack to stop Christmas, its up to Amelia, her new family and the elves to keep Christmas alive. Before its too late . . .