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Women's Fantasy Mermaid Costume
Sale - 20% Exclusive
Sea Siren Women's Costume
Made By Us Exclusive
Under the Sea Mermaid Women's Costume

Under the Sea Mermaid Women's Costume

£60.99-£75.99
     
Men's Salty Merman Costume
Made By Us Exclusive

Men's Salty Merman Costume

£50.99-£55.99
Men's Poseidon Costume
Made By Us Exclusive
Adult Mermaid Costume
Made By Us Exclusive
Little Mermaid Ariel Deluxe Womens Costume
Exclusive

Little Mermaid Ariel Deluxe Women's Costume

£50.99-£60.99
     
Women's Sea Siren
Made By Us Exclusive
Adult Pirate and Mermaid Costume
Sale - 38%
Plus Size Women's Undersea Mermaid Costume
Sale - 20% Made By Us Exclusive
King Neptune Costume
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Child Mermaid Princess Costume
Sale - 50%
Rebel Mermaid Womens Costume
Sale - 20%
Womens Siren of the Sea Costume
Sale - 20%
Aqua Warrior Womens Costume
Sale - 30%

Aqua Warrior Women's Costume

£35.99-£50.99*
Elite Mermaid Costume
Video
Adult Sweet Mermaid Costume

Adult Sweet Mermaid Costume

£40.99-£50.99
High Waisted Mermaid Costume
Sale - 33% Exclusive
Women's Black Mermaid Costume
Sale - 20%
Women's Sexy Noir Mermaid
Sale - 35%
Seaweed Boa

Seaweed Boa

£9.99
Deluxe Women's Wicked Sea Witch Wig
Made By Us Exclusive
Deluxe Womens Mermaid Tail
Sale - 20%
Little Mermaid Wig

Lil Mermaid Wig

£12.99
Women's Green Mermaid Shoes
Sale - 17%

Women's Green Mermaid Shoes

£25.99-£30.99*
Sea Shell Purse
Made By Us Exclusive

Sea Shell Purse

£15.99
Women's Green Mermaid Heels

Women's Green Mermaid Heels

£32.99-£40.99
Women's Silver Mermaid Heels
Sale - 38%
Adult Mermaid Leggings
Sale - 68%

Adult Mermaid Leggings

£25.99 £8.99
Pink Ombré Wig
Made By Us Exclusive

Pink Ombré Wig

£16.99
Shell Bra

Shell Bra

£4.99

We contend that Mermaids aren't real no matter how many of those weird documentaries on the History Channel say they are! We need ireffutable proof... but wait a minute... there's been a new sighting and it's pretty compelling... this can't be, but mermaids ARE real and they've been sitting right here at Halloweencostumes.com this entire time! This is remarkable! We're looking through our spyglass here and we see mermaid costumes for kids and women both, from sexy to classic styles, and even mermaid costumes that recreate a certain animated character that loves to sing on rocks! Someone call a documentary crew because we've got the scoop of the century here! 

Whether you want a sexy mermaid costume, a stunning girls mermaid outfit, a goth mermaid costume, or even an under the sea warrior - we have it all! 

HalloweenCostumes.com How To

Mermaid Costumes

Mermaid Costumes

It is time to dive into the bright blue sea and live out your dreams as one of the most beloved mythological creatures in all of history. Are we talking about the mystical dragon? Well, they've got shining scales. How about the mysterious witch? Well, they are definitely known to have a bit of magic! What about the world-famous sea monster that dwells in the depths of Loch Ness? Well, that would be pretty awesome—and we're sure that they are good friends with Nessie—but we're talking about the mermaid! But what's the first step? (Or would it be the first kick of your fin?) What kind of merfolk do you want to become? With such a wide variety of these lovely ocean-dwelling beings, it can seem a pretty daunting affair to transform into one. Fortunately, we have a few hints and tips to help you bring to life the little mermaid costume adults and kids alike will love. Whether you are looking to wear a mermaid fancy dress costume for Halloween or you're looking to take an aquatic twist for your holiday photos, you've come to the right place for mermaid costume ideas for adults, children, and even your four-legged friends!

Mermaid Halloween Costumes

There are a lot of different routes you can take for the perfect Halloween mermaid costume. You could dress up as a manatee, first off. (They say that early sailors and pirates saw those majestic creatures and maybe a bit of sea madness made them see beautiful women.) But if you're here, we're assuming that you're looking for a mermaid Halloween costume that women will feel magical wearing! Mermaids are very different all around the world. (You can just ask Harry Potter or Peter Pan how friendly they can be!) Try life as a goddess of the ocean with a look inspired by the Sirens of ancient Greek mythology. You could also take a particularly haunting look by going for a more monstrous version of the mermaid. Take a peek at some of our beautiful and our scary mermaid costume options to start your Halloween on the right fin.

Mermaid Costume for Kids

Mermaid Costume for Kids

Does your kiddo enjoy swimming? Is October not the ideal time to jump into the pool? Well, with a mermaid costume, a child can live out their fin-flipping fun without worrying about getting the chills. The best part of our child and tween mermaid costumes is that they come in varying styles. From green mermaid skirts to bright blue or even sparkling sequins, our kids' mermaid costumes will let your kiddo feel just a bit more magical in every season.

Mermaid Costume for Adults

Mermaid Costume for Adults

Merfolk come in all shapes and sizes. That's why our exclusive Mermaid and Merman costumes do too! You'll feel like a king or queen when you wear a high-quality costume that turns you into a ruler of the sea. Channel your inner Greek deities when you become a Siren, a mystical creature that dwells in the seas and lures in all with their voice. Or rule the tides as Poseidon, himself! They are great options for mermaid couples' costumes, too!

Sexy Mermaid Costume

Sexy Mermaid Costume

Some mermaids are sweet. Some mermaids are kind. Some mermaids have sailors dreaming for years about returning to the magical depths. Perhaps you're looking for a ladies' mermaid costume that will make some serious waves and drive the seven seas wild? Well, you need look no further than a two-piece mermaid costume that shows off your curves. Become a mermaid of legend and privateers will be leaping for Davy Jones' locker to be part of your world.

Skeleton Mermaid Costume

Skeleton Mermaid Costume

If you're thinking that Halloween should be a little spookier than your average little mermaid story, we have just what you're looking for. The season is all about ghosts, skeletons, and creatures that haunt the night. Well, a skeleton mermaid costume fits both worlds at once! Are you a deep-sea voodoo queen or are you a member of the aquatic dead? It's up to you! All we know is that a dead mermaid Halloween costume is a surprising hit with fish from any ocean.

Little Mermaid Costumes

Obviously, we can't talk about mermaids without mentioning one of the most famous ones out there: the singing celebrity of the sea! We're talking about a certain little mermaid made famous from the Hans Christian Andersen story and Disney's epic film. She's the red-haired princess below the waves with a voice that could calm the most vicious of sharks. (And, since sound travels a long way in the water, that is a pretty impressive superpower.) If Disney sings in your soul or you're a major fan of storybooks or hit movies, you might be interested in a Little Mermaid costume for your fancy dress festivities. Don't feel limited by just portraying the classic mermaid, though. You could flounder around as a fish or conquer the whole of the depths by dressing up as one of the most powerful villains ever imagined! Take a high dive into Halloween with some of our favourite looks, all inspired by The Little Mermaid.

Girls’ Mermaid Costume

Girls’ Mermaid Costume

Your little one might have a song in her heart just waiting to belt out. And you might be a protective parent who wants to make sure that kiddo doesn't wander too far at once. Sounds like a perfect opportunity for an Ariel Little Mermaid costume a child would love! Ariel is one of our favourite Disney Princesses, so we're happy to offer a variety of adorable toddler mermaid looks that are inspired by her epic tale (and her tail, too).

Ariel Mermaid Costume

Little Mermaid Costume

The original story of The Little Mermaid didn't end up so great for the mermaid. Seafoam Green might be a beautiful colour for a mermaid skirt, but let's leave it at that! Fortunately, this time around, you get to tell the tale your own way. Team up with a certain prince if you like. Or gather up a team of other seafaring princesses and snatch a ship from some passing pirates. No matter which version is your favourite, this lovely Little Mermaid is for you!

Men’s Mermaid Costume

Men’s Mermaid Costume

Of course, The Little Mermaid is pretty much all about the young gal and her quest to explore the surface world. But, boy did that make her father salty. Nobody wants to be disobeyed, but when your kiddo goes off to consult with a sea witch just to go on a date? Well, that's just not going to work for this Merman! The Little Mermaid is a story for the guys, too. So if you'd like the world to see that there's more to the tale, get your fins wet in a salty merman costume.

Mermaid Halloween Costume Makeup

We know that you're certain to love your classy mermaid costume. Who wouldn't enjoy swishing their hips and feeling the tulle of a terrific skirt or seeing the glitter of sequin scales on your leggings? But if you want to make sure that your undersea style is truly memorable, we have a tutorial to help make your look truly pop! Once you've got the perfect mermaid Halloween costume, mermaid makeup is the next step. Take a look at this video guide to find out how to highlight your features and give you some shining mermaid scales on your brow and forehead. Be creative and apply the same techniques to give yourself a set of gills on your neck or jawline or bust, helping you to create an even more magical look!

Mermaid Costume Ideas

If the traditional dress of the merfolk isn't quite what you're going for, don't worry about drowning! With a selection of unique costume pieces, you can bring your mermaid fashion out of the depths and into the light of day. Ariel kept saying that she wanted to be part of our world. Well, we're happy to make that possible with a few different perspectives on the classic creature. What would a mermaid need to dance around on the land? Maybe an astronaut helmet until she got used to a breathable atmosphere? Then again, Mermaids in Space could be an entirely new idea, too. Swim through the sea of stars! Perhaps a pair of superhero gauntlets or a gleaming crown will help you set your mermaid look apart from others. Show that Aquaman lad who the real monarch of the sea truly is!

Hipster Mermaid Outfit

Mermaid Outfit

What would happen if a mermaid washed up on the scene in Brighton? Well, our beloved little mermaid was already a bit rebellious. She loved to collect neat baubles and decorate her underwater flat with everything the rest of the merfolk thought was weird looking. If you're a little wacky and love everything unique, we suspect that you'd fall in love with the hipster quality of a rebel mermaid costume.

Baby Mermaid Costume

Baby Mermaid Costume

Is your littlest one your precious jewel of the sea? If so, you might want to show that darling mer-baby off to the world. Have your little mertyke join you as you explore the world. Bundle up your baby in an baby mermaid costume and it'll be smooth swimming. Just imagine the pairings you can make. From pirate and mermaid to a fisher who caught the perfect prize from the sea, there are endless new mermaid stories to tell.

Mermaid Tail Skirt

Mermaid Tail Skirt

If you want to invent your very own mermaid look, you don't have to depend on an entire costume to make it happen. One of the things that makes every mermaid unique is their tail. A vibrant green mermaid tail has become pretty iconic, but there are many colours in the rainbow...and even more under the sea. Choose a sequin mermaid skirt costume accessory that matches your favourite top and you'll have dreamed up a brand-new underwater hero!

Mermaid Costume Top

Mermaid Top

The full mermaid bodysuit costume is a great option, but you can accentuate your top in a lot of different ways, too. There is the classic seashell bikini top that gives you the freedom of underwater swimming. There are also several mermaid costume tops that are better suited for exploring the surface world. Choose a quirky mermaid shirt to match your mermaid-cut skirt. You could even go with a full mermaid costume kit to give you the fins, the flair, and the fun!

Mermaid Accessories

Mermaid Costume Accessories

Once you've picked out your tail-flippingly perfect mermaid costume, you can always make it even more you by picking out a few exclusive accessories to bring your character together. You might wonder how mermaids tote around their things in the deep blue sea. Well, one of our Made By Us purses can have you set in seashell splendour (or you can have your fishy friends help you out). If you've ever wondered how mermaids keep their hair looking so beautiful, we've got a hint: it's with magical wigs! Ours might not be ideal for diving underwater, but you'll be looking stunning in a two-tone mermaid wig. (Of course, you can go wild with an evil sea witch hairdo, too!) From sparkling circlets, wondrous weaponry, and shining sequin shoes, the right accessories can make your mythological look come together just the way you've always dreamed.