Signed copies of Tom Fletcher's The Christmasaurus have already sold out
The book isn't due out until next month.
Signed copies of Tom Fletcher's eagerly awaited book have already sold out, but unsigned copies of the book are still available to preorder from a number of shops.
Tom signed 5000 copies of the book, teasing the release of the book to his Instagram followers.
He announced his intention to release a Christmas book back in March when he did his 'Live from the Delivery Room!' video at a publisher's sales conference.
The Christmasaurus, which is about a boy called William Trundle and a dinosaur (the Christmasaurus) will be released on the 6th October.