Princess Leah and Princess Amelia are so excited! The princesses at Emerald Castle are going on a hot air balloon race to the Princes' Academy!

And once they are at the Princes' Academy, the princesses are going to have a croquet match against the princes! Who will win the match?

And will the nasty twins Diamonde and Gruella spoil everything for all the other princesses at the grand Emerald Ball that night?

This book is part of a book series called The Tiara Club .

There are 160 pages in this book. This book was published 2008 by Hachette Children's Group .

Sarah Gibb is the talent behind The Bridesmaid's Diary, that has become an international success story. She lives in London. Vivian French is a well-known author who has written over 150 books for children.