Disney Princess the Little Mermaid the Original Magical Story
My daughter has the Disney film, so I knew she would enjoy the book. I have read it to her a few times, and she had attempted to read it herself also, with my help. She likes that the story is the same as the film, but just shortened, and she enjoys looming at the pictures, which are also from the film. It is quite long, but my 5yr old happily sat through it.