What archetype does the movie Pretty Woman represent? What are the archetypes for the hero (Richard Gere) and the heroine (Julia Roberts)?

Pretty Woman represents the age old fairy tale theme of a helpless woman and Prince Charming. Julia Roberts, the heroine, is the twentieth century archetype of Cinderella and Richard Gere, the hero, is Prince Charming. My Fair Lady, a classic movie, is also an archetype for Pretty Woman.