I liked the book a lot.
It is a good casual read if you don't want anything too deep. It takes the Cindarella story we know and tells what happens 200 years after Cindarella found here Prince Charming. 
I like the idea of the book, that what once was an accident had become to a duty for every girl in the kingdom. Go to the annual ball and find your "prince". And beware if you don't fit in. As our protagonist Sophia does.
I think this story fits best for readers within the ages 12-16, but can be read if older. 
It had some minor plot holes, and some difficulties within its pacing - sometimes things progressed in a strange way - what made reading difficult at some parts. But as a whole it is an interesting story and nice for a reading break without thinking too much.
I liked it a lot.