Was that a mermaid or Cinderella? Wouldn't it be fun to be both in a twinkling of an eye? Be comfortable under the sea or in a rabbit hole. That's just what you can achieve in this officially licensed Disney Princess product that features a pretty Cinderella ball gown that can be transformed into an Ariel the Mermaid costume complete with shimmer detail and sequin trim. You are going to have loads of fun switching from being the rebellious youngest daughter of King Triton and Queen Athena Menfolk the underwater kingdom to the equally pretty Cinderella. Little girls between the age of 3 and 8 can have a swell time in this Disney Princess outfit available right here in child sizes small, medium, and large. Count on this as two outfits for the price of one and you won't be disappointed. Officially Licensed Disney Princess Product. Officially Licensed Disney Princess Product. Costume Details: Cinderella Ball Gown That Transforms Into Ariel The Mermaid With shimmer Detail And Sequin Trim. Costume Available Sizes: Small ( Age 3-4 ) Medium ( Age 5-6 ) Large ( Age 7-8 )