Here’s the blurb:

Ella’s stepsisters aren’t just evil, they’re werewolves. She attempts to gain some control over her life by secretly stealing their clothes to attend a costume party. At the party, she meets a mysterious stranger who is about to become a central figure in the dominance struggle of Ella’s life. What she doesn’t expect, however, is that sometimes the path to happiness is just a matter of being submissive to the right alpha.