The Disney character known for losing her glass slipper is Cinderella. This beloved fairy tale character originates from the story "Cinderella," popularized by the Brothers Grimm and later adapted by Disney in their 1950 animated film. The story follows Cinderella, a kind-hearted young woman mistreated by her stepmother and stepsisters, as she attends a royal ball with the help of her fairy godmother. The iconic glass slipper becomes a symbol of her true identity and destiny when the Prince searches for the owner. Cinderella's tale has become a timeless classic in literature and film.