Which fairy tale tells the story of a young woman whose royal identity is established by a test of her physical sensitivity. This tale was adapted to the musical stage in a production called "Once Upon a Mattress" starring Carol Burnett.

The Princess and the Pea is the fairy tale where a young woman's royal identity is proven through a test of physical sensitivity - she feels a single pea through twenty mattresses and twenty featherbeds. The musical Once Upon a Mattress starring Carol Burnett is a comedic adaptation of this story. Thumbelina is about a tiny girl, Snow White involves a poison apple, and Sleeping Beauty features a cursed slumber.