Her Princess at Midnight - Regency Fairy Tales, #2

What if Cinderella fell for the handsome prince's. sister? Cynthia lives a life of drudgery, toiling for her stepmother and stepsisters without receiving gratitude or pay. Every day is the same. until a royal retinue sweeps into town, inviting every unwed maiden to vie for the hand of the visiting prince. The moment she lays eyes on the prince's beautiful sister, Cynthia is smitten. She's never been to a ball, and she's determined not to miss this one.
But when her family refuses to allow her to attend-not that Cynthia even has a gown to wear-it will take a miracle to escape the attic and catch the eye of the princess who holds the key to her heart!