As far as picture books go at our school, it's all about the "P" -- as in Pinkalicious, Pete the Cat, and Pigeon.
My kiddos threw in a few other titles for good measure. And they obviously love Christmas books year round :)
10. Pete the Cat : Rocking In My School Shoes by Eric Litwin
Pete the Cat and His Four Groovy Buttons by Eric Litwin
8. Fly Guy and the Frankenfly by Tedd Arnold
Don't Let the Pigeon Stay Up Late! by Mo Willems
6. Pete the Cat Saves Christmas by James Dean
5. How the Grinch Stole Christmas by Dr. Seuss
4. Pinkalicious by Victoria Kann
3. Pigeon Wants a Puppy! by Mo Willems
2. The Pigeon Needs a Bath! by Mo Willems
1. Pete the Cat : I Love My White Shoes by Eric Litwin
Also check out the Top 10 Graphic Novels, Top 10 Nonfiction and Top 10 Chapter Book lists.