The Shoe of Happiness (episode 25)

Prince Charles cannot stop gazing at Cinderella's Glass Slipper. The King and Queen initiate a search for the elusive girl from the ball. Failing to find her name on the guest list, they grow increasingly desperate and bring the Glass Slipper to every household in the Emerald Kingdom. Upon learning of the Prince's quest, Cinderella sinks into despair, convinced that her humble status will deter him. When Alex arrives at Cinderella's residence with the Glass Slipper, she is confined to her chambers. Despite Jeanne and Catherine's unsuccessful attempts to fit into the shoe, Alex insists that all young women try it on. Cinderella is eventually escorted downstairs, where she hesitates to wear the slipper until Patch retrieves its counterpart and Miss Paulette employs her magic to reveal her true identity as a princess, much to her stepfamily's astonishment and dismay.