Mermaids make a fun costume for Halloween, parties and dress up. Find the DIY mermaid costume fit for your age. We featured a variety for kids, teenagers, and adults. There’s even one that can be worn as an everyday outfit for fun. Whether you’re aiming to be cute, sexy or scary, these creative DIY costumes will make you the mermaid you always wanted to be.
1. DIY Mermaid Costume, Hair and Makeup
Creating a DIY mermaid costume is a breeze with this no-sew tutorial. This project is easy to do and has advice for makeup and hair to go with the costume. There is also a part at the end on how to customize this costume for cold weather.
Level of difficulty: Easy
Duration: 30 minutes
Materials you need:
• Purple top
• Green scale fabric
• Starfish
• Pearl stickers
• White fabric paint
• Gold fabric paint
• Glitter fabric paint
• Headband
• Glue gun
• Fabric scissors
• Paint brush
• Dark green eye shadow
2. DIY Halloween Mermaid Costume
This is a unique DIY mermaid costume. They used one of their own skirts to measure out the size and shape of the mermaid tail. The top is a beautiful sea shell and sequin combination that is sure to turn heads.
Level of difficulty: Medium
Duration: 1-2 hours
Materials you need:
• Blue shiny fabric
• Fabric chalk
• Pins
• Green fabric paint
• Paint sponge
• Fabric scissors
• Fabric glue
• Beige bra
• Beige fabric
• Seashells
• Sequins
3. DIY Sexy Mermaid Costume
If you don’t want a mermaid tail, but still want a sexy DIY mermaid costume, this tutorial is a great option. There is no sewing involved and is quick and easy to make.
Level of difficulty: Medium
Duration: 1-2 hours, plus overnight for glue to dry
Materials you need:
• 2 Large sea shells
• Glitter
• Stacked bracelets
• Pearl stickers
• Organza
• Sequin fabric
• Decorative fishnet
• Fabric tape
• Spray adhesive
• Bikini top
• E6000 glue
4. DIY Easy & Inexpensive Mermaid Costume
This DIY mermaid costume is easy to make. They use a pre-owned skirt, but you can easily make one as well. It’s also a cute outfit that can be worn all year round.
Level of difficulty: Easy
Duration: 30 minutes
Materials you need:
• Pencil skirt
• Stamp carving block
• Fabric glue
• Glitter
• Paint brush
• Fabric paint
• White halter top
5. DIY Toddler Mermaid Tutu
Here is a cute mermaid costume for a child. This tutorial is easy to follow and fun to make.
Level of difficulty: Easy
Duration: 15-30 minutes
Materials you need:
• Crochet knit tube top
• Tulle (two different colors)
• Elastic
• Pearl stickers
• Gold fabric paint
• Hair barrette
• Starfish
• 2 Medium sea shells
6. DIY Mermaid Costume Under $50
For a unique mermaid costume, this DIY tutorial makes a fully customizable top using beads and pearls. The pattern on the skirt is hand-drawn with glitter glue, but a homemade stamp could do the same thing.
Level of difficulty: Easy
Duration: 2-3 hours
Materials you need:
• Beige strapless bra
• Fabric glue
• Shiny fabric
• Pearl beads
• Flatback beads
• Glitter glue (optional)
• Starfish
• Tulle
• 2 Large sea shells
7. DIY Siren Mermaid Costume
This DIY siren costume uses leggings instead of a fin. It’s a beautiful siren outfit that’s sure to turn heads at the next costume party.
Level of difficulty: Medium
Duration: 3-4 hours
Materials you need:
• 2 Large sea shells
• Pearl beads
• Flatback beads
• Seashells
• E6000 glue
• Beige bra
• Headband
• Ribbon
• Wire
• Translucent fabric
• Glitter
• Sequin elastic
• Tulle
• Scale Leggings
8. DIY Easy Mermaid Costume
If you want an easy-to-make mermaid costume that doesn’t involve a lot of gluing pearls and beads, but still looks good, this tutorial is for you.
Level of difficulty: Easy
Duration: 30 minutes
Materials you need:
• Starfish
• Glitter paint
• Hair barrette
• Sequin tube dress
• Tulle
• Needle and thread
• Metallic Bandeau
• Long pearl necklace (Optional)
• Starfish cuff (Optional)
9. DIY Skeleton Mermaid Costume
You can’t go wrong with a skeleton costume for Halloween. To make it more unique, try this DIY skeleton mermaid to make you stand out from the rest of them.
Level of difficulty: Easy
Duration: 1-2 hours
Materials you need:
• Black sequin fabric
• Safety pins
• Translucent fabric
• Needle and thread
• White felt
• Fabric glue
• Black crop top
• 2 Large white sea shells
• Tiara
• Starfish
• Seashells
• Gem stickers
• Silver paint
• Glitter
• White Halloween face paint
• Black Halloween face paint
• Red eyeshadow
• Black eyeshadow
• Black liquid eyeliner
• Purple face glitter
• Purple lipstick
• Pink wig (optional)
10. DIY Child Mermaid Costume No Sew
This DIY mermaid tail can be made to fit anyone, from kids to adults. The tutorial is quick and easy to follow. Just pair this mermaid tail with any cute top and you have a fun costume.
Level of difficulty: Easy
Duration: 30 minutes
Materials you need:
• Green metallic fabric
• Tulle
• Nylon string
• Fabric scissors
• Glue gun
11. DIY Ariel Costume
What is a mermaid costume list without Ariel? Here is the tutorial that will have you feeling like a princess mermaid at the costume party.
Level of difficulty: Easy
Duration: 15 minutes
Materials you need:
• Purple felt
• Sequins
• Fabric scissors
• Safety pins
• Glue gun
• Beige bandeau bra
• Blue sequin fabric
• Tulle
• Red wig (optional)
Conclusion
You can never go wrong with a mermaid costume, and these DIY ideas are the perfect place to start. Also, in case you need a Halloween costume idea, you can also read our DIY article for inspiration. These mermaid costumes are fully customizable and you can always take the top from one to pair with the tail of another. Show us how you made your mermaid costume to fit your style!
