The King's Equal by Katherine Paterson illustrated by Curtis Woodbridge*

A dying king wisely states that the only way his arrogant son can take the throne is if he finds a woman to be queen who is his equal.  Of course, no woman in the land is as beautiful as he is handsome, as intelligent or as wealthy (his opinion!). 
In the countryside is a poor young lady whose kindness wins her favor with a magical wolf. 
The unlikely pair, the arrogant prince and poor woman, meet and their lives are transformed forever!
A wonderful tale!  I read it aloud to my sons in one sitting.
Although it is a picture book, it is divided into chapters.
Exquisite illustrations
*Highly recommend.
-Borrowed from the library.