11 BIRTHDAYS by Wendy Mass. Book 1 in the Willow Falls Quartet. I just LOVE this book! Amanda & Leo, born on the same day in the same hospital, always celebrate their birthdays together. Until they don't. Separate parties on their 11th birthdays lead to a "Groundhog Day" scenario where they have to live the day over and over until they get it right. A real life story with a just a little bit of magic makes this book a fun and unforgettable read!