"like Cinderella's slipper"
Cinderella and the Prince - illustration from 1865 edition of 'Cinderella'
Public DomainCinderella and the Prince - illustration from 1865 edition of 'Cinderella' - Credit: from a story by George and Edward Dalziel
Cinderella is a character from a fairy tale, of which there are many variants throughout the world.

The most commonly known version in Britain tells of a young girl, Cinderella, who is mistreated by her stepsisters. However, through the actions of a fairy godmother, Cinderella manages to attend two balls where a prince falls in love with her. The prince eventually traces Cinderella through a slipper left behind at one of the balls, which out of all the women in the kingdom fits only her.