Diamond the Magic Unicorn

Princess Evie is crazy about her ponies. But Princess Evie's ponies aren't like any other ponies - oh no! Her ponies are magic ponies and, whenever Princess Evie rides them, she is whisked away on a magical adventure in a faraway land . . .
In this seventh book in the series, Princess Evie and Sparkles, the kitten, find themselves in a magical world of cloud sprites and unicorns! Evie is invited to take part in the Unicorn Games, will Diamond be good enough to win a prize?