Best friends Charlotte and Mia are training to become Secret Princesses, magical princesses with the power to make wishes come true!Layla would love to be on a gymnastics team, but horrid Princess Poison has taken her lucky charm! Can the girls show her you don't need luck when you have friendship?Have you read all four books in series four: The Sapphire Collection?Fashion Fun Brilliant Bake-off Gymnastics Glory Picture Perfect