It may be better down where it's wetter, but we can't currently live under the sea. However, these The Little Mermaid costumes can make it feel like you just stepped into our favorite underwater movie! We have character costumes for all your favorites, from Ariel and Ursula to Flounder and Prince Eric. Come see our best Little Mermaid costumes, and make them part of your world!
Ariel Costumes
| Plus Size Ariel Dress | Kids' Live-Action Ariel | Child Ariel Costume | Women's Ariel Costume |
| Premium Ariel Costume | Toddler Ariel Costume | Girls' Ariel Costume Dress | Ariel Pink Dress |
If you could be a Disney Princess for a day, who would you choose? There are so many great options, but only Ariel will let you experience being a magical mermaid! You can find all the best Ariel costumes at HalloweenCostumes.com, including her famous mermaid costume. However, we also have Ariel's blue village dress and her famous puffy-sleeved pink ballgown. Find Ariel costumes for kids, adults, babies, and toddlers. We don't want to leave anyone out!
Ursula Costumes
| Plus-Size Inflatable Ursula Costume | Child Live-Action Ursula | Baby Ursula Costume | Live-Action Ursula Costume |
| Prestige Ursula Costume | Tween Ursula Costume | Kids' Live-Action Ursula | Sequin Ursula Costume |
Don't be one of the poor unfortunate souls who pass up the opportunity to wear an Ursula costume! This sly sea witch is one of our favorite Disney villains. Her palette pops with purple and black, and the live-action Ursula costume even has a touch of teal. You can also find several styles, from shimmering sequins to an inflatable Ursula costume!
Prince Eric Costumes
| Live-Action Prince Eric | Child Prince Eric Costume | Toddler Prince Eric | Plus Size Prince Eric |
It's hardly a Disney movie without a prince! Whether you're part of a couples' costume idea with Prince Eric and Ariel or you're flying solo, we have Prince Eric costumes for all ages! You can also choose between a live-action Prince Eric costume or the animated classic. We hope you fall in love with these Little Mermaid Halloween costumes as much as Ariel and Eric did!
King Triton Costumes
| Plus Size King Triton | Live-Action King Triton Costume | Sea King Costume | King Triton Costume |
Do you want to be a powerful merman? Guys can be mermaids too! King Triton is a great Halloween costume for guys who love fantasy characters. (And also a great costume idea for men with beards!) Plus, you can accessorize with a golden trident. Be the most powerful man in the sea with these King Triton Halloween costumes!
Flounder Costumes
| Adult Flounder Costume | Toddler Flounder Costume | Live-Action Flounder Costume | Girls' Flounder Dress |
If your family is looking for a fun group costume idea, there are enough Little Mermaid character costumes for most families. Flounder is one such costume! You can dress as Ariel and Flounder as part of a Mommy and Me costume, or choose all of the underwater characters such as Ariel, Triton, Flounder, and Sebastian. However, you're at liberty to do your group Halloween costume your way!
Sebastian Costumes
| Sebastian Baby Carrier Costume Cover | Toddler Live-Action Sebastian | Kids' Sebastian Costume | Adult Sebastian Costume |
Do you need even more The Little Mermaid costumes for a large group? Add someone in a Sebastian costume! This crimson crustacean is unforgettable with his love for song and dance. (Just expect that someone will ask you to belt out "Under the Sea".) We have Sebastian Halloween costumes for every shape and size, including an adorable infant carrier. (Hopefully, they're not too crabby about it!)
The Little Mermaid Accessories
| Ursula Tentacles Kit | King Triton Beard and Wig | Flotsam and Jetsam Scarf | Sebastian Baby Carrier |
| Ariel Wig | Tween Ursula Wig | Flounder Bag | Flotsam and Jetsam Bag |
Take your Halloween costume from standard to stellar with these Little Mermaid accessories! Include Flotsam and Jetsam in your Ursula costume as a costume scarf, or find a Flounder bag to pair with your Ariel costume. You can also find plenty of character wigs, costume kits, and more, and don't forget your purple body paint!
The Little Mermaid Pet Costumes
| Ariel Costume for Pets | Ursula Dog Costume | Flounder Dog Costume |
| Plus-Size Ariel | Ursula Cat Costume | Flounder Cat Costume |
Do you love to dress up your pet for Halloween? Include them as part of your Halloween costume with these pet Little Mermaid costumes. You can go as Ariel and Ursula, Flounder and Sebastian, or any combination that works for you! Take plenty of pictures because you'll want to share your costumed antics with friends and family.
Little Mermaid Theme Party Ideas
Disney Princess party themes are very popular for kids' birthdays and watch parties and can be applied to other events! We're specifically going to share tips and tricks for hosting the best Little Mermaid-themed party. Find ideas for decorations, party food, music, and more!
Little Mermaid Music
If you're hosting The Little Mermaid party, you probably know that the entire movie soundtrack is filled with hits. You can pop in either the original animated Little Mermaid music, and there's also the live-action movie soundtrack too. Of course, if you want background music without lyrics, find relaxing beach music or ocean sounds with calming music.
Little Mermaid Decorations
You can go as simple or as detailed as you want when decorating for a Little Mermaid party. Use bunches of balloons of various sizes to mimic bubbles, sprinkle chunky sequin glitter for scales, and you can even use bouquets of flowers that look like coral! If you want to go all-out, find balloons and piñatas resembling ocean creatures. Also, most hobby and craft stores will have bags of seashells, which you can use for decoration. (Although, if you live near a beach, you can also get seashells for free!)
Little Mermaid Party Favors
Speaking of seashells, you can also use them to decorate your party favors! Fill little jars with round pearl candies or some other fun snack or trinket. Put a seashell on top with a bow for decoration, and you're done! If you're hoping to try something else, you can make little bottles with messages hidden inside or small bottle necklaces filled with tiny seashells and sand. You're more than welcome to try other Little Mermaid party favor ideas if you're feeling creative!
Little Mermaid Food and Drinks
How many blue foods can you think of? Now, we're not going to say that everything has to be blue because The Little Mermaid is so bright and colorful, but these blue smoothie bowls with mermaid tail cookies are so cute. You can also make cupcakes and dipped pretzel rods with candy pearls, but don't forget to serve more than dessert! Get a colorful fruit tray—and fish sticks, shrimp, and sushi work well with underwater-themed foods. As for your drinks, think of tropical teas, cocktails, and juices, depending on your audience. Don't forget brightly-colored plates, napkins, and cups!
Little Mermaid Activities
When your party is mermaid-themed, expect there to be water! Break out the water guns and water balloons, or if you have a pool, play your favorite pool games. (Marco Polo and floating ring toss come to mind.) You can also take classic party games like Pin the Tail on the Donkey and adapt them for your Little Mermaid party. Pin the Tail on the Mermaid, anyone? Of course, if you're hosting a The Little Mermaid watch party, have your movie ready to play!
We hope you're ready for your next underwater adventure! Did you expect to see so many Little Mermaid costumes? Do you prefer the animated classic or the live-action movie? Feel free to share your thoughts with us in the comments. Even if Disney's The Little Mermaid isn't your favorite Disney movie, we have plenty of other Disney costumes that you might fall in love with.
