"13 Days of Swiftness: A Christmas Celebration for Fans" is a hardcover book written by Tiffany Garland and illustrated by Brooke O'Neill. The book is part of the Tiffany series and is published by Little, Brown Books for Young Readers. It was released in 2024 and is 8.7 inches in length, 8.3 inches in width, and 0.4 inches in height. The book weighs 7.9 ounces and is written in English. The genre of the book is music and juvenile fiction, and it counts down gifts given for Christmas.