Cinderella in Mink

Nicola runs away from a fancy dress party, dressed in rags as Cinderella, thus when she is hit by a car Barnaby Grayson mistakes her for someone down on their luck. Nicola is actually an heiress. But she gets sucked into Barnaby's world, originally to pull a prank on him, but then because she sees what a difference he is making and because she falls in love with him. Its actually a pretty interesting book, with character grown and actual respect between the characters.