Little Mermaid Costumes

An adventure with Flounder and Sebastian?

The Little Mermaid is a film that shaped many childhoods. Ariel, the famous red-haired princess, is one of the best costume choices for 2026. Do you want to create your own mermaid look, or would you rather be Ariel, Melody or Aria? There are plenty of options to choose from!

We also have the best accessories for your mermaid costume, including wigs, mermaid tails, headbands and more.

Disney princess costumes

Princess themes are among the best sellers, especially for girls and women.

• Belle costume: one of the most recognisable costumes for Disney film lovers. This long yellow dress is impossible to miss.
• Snow White costume: the very first Disney princess is one of the most popular costume choices. Have you found your seven dwarfs yet?
• Jasmine costume: do you love adventurous princesses? The Jasmine costume is perfect for those who want a bolder look with the comfort of trousers.
• Cinderella: will you be the one to lose a shoe? The Cinderella costume features a beautiful blue dress that will have you dancing all night.

If you’re looking for a film costume, don’t forget to browse our selection!

A princess under the sea

In general, girls love dressing up as princesses. At that age, few things are more exciting than putting on a dream dress and becoming the star of the story. Alongside the classic princesses, there are some very special ones who live under the sea and wear tails instead of elegant dresses: mermaids. If your little one loves mermaids too and you’re looking for a costume for her, you’re in the right place. At Costumalia, we have lots of styles that will let her imagination swim free.

The Little Mermaid Ariel costumes are the most famous. This Disney princess, with her green tail, lilac top and unmistakable red hair, has become an icon for many girls.

Mermaid costumes with a dress or skirt are one of the most popular versions. The tail is created with a tulle skirt or a frilled dress, with pink, blue and lilac colours that little ones absolutely love.

Costumes of The Little Mermaid’s friends are perfect for a group costume or for dressing several siblings together. You can choose from Flounder the fish, Sebastian the crab and many other sea creature costumes, ready to sing the lively song “Under the Sea” together.