The Frog Prince is a fairy tale, best known through the Brothers Grimm's written version. The 2009 animated film, The Princess and the Frog is loosely based on this story.

In the tale, a spoiled princess reluctantly befriends the Frog Prince (meeting him after dropping a gold ball into a pond), who magically transforms into a handsome prince. Although in modern versions the transformation is invariably triggered by the princess kissing the frog, in the original Grimm version of the story is a a little bit different.

In addition, following this classic tale, you have The Princess and the Pea. This short story by Hans-Christian Andersen tells the story of a prince who wants to marry a princess, but is having difficulty finding a suitable wife. Something is always wrong with those he meets, and he cannot be certain they are real princesses. One stormy night a young woman drenched with rain seeks shelter in the prince's castle. She claims to be a princess. But how can the prince ascertain she really is? This classic tale tells the story of how he put her to the test.