Here are the easiest practice readers we could find that featured popular  princesses. We hope these books motivate your young readers to practice  and enjoy books.
Cinderella at the Ball
by Margaret Hillert
The   simplest possible telling of the Cinderella story.  There are 45  unique  words.  The most difficult words are: orange, something, mother  and  father. The rest can be found in the standard Margaret Hillert list (hover here).
Our More Detailed Review
Reading Information:
Word Count: 269
Word Count: 32
Accelerated Reading level: 0.7 / points: 0.5
AR quiz: 9355
Lexile: BR
- Publisher: MODERN CURRICULUM PRESS
 - ISBN-10: 0813655323
-- amazon 
Big Friend, Little Friendby Melissa Lagonegro
This book introduces the idea of opposites with simple text and  illustrations from the Disney film "The Princess and the Frog".
Reading Information:
Word Count: 86
Word Count: 32
Accelerated Reading level: 0.7 / points: 0.5
AR quiz: 135353
- Publisher: RH/Disney
 - ISBN-10: 0736426442
-- sample pages 

