15 Easy DIY Mermaid Costume Ideas

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easy DIY mermaid costume for adults

DIY Mermaid Costume for Adults

Love The Little Mermaid or the idea of dressing up as a mermaid for Halloween?

Believe it or not, it’s really EASY to make an adult mermaid costume yourself.

This guide for making a DIY mermaid costume for adults includes sexy mermaid costume ideas, cute mermaid costume ideas, mermaid costume jewelry, and more!

You’ll also find more DIY mermaid costumes, including:

  • Starbucks Mermaid DIY costume for adults
  • Scary mermaid DIY costume for adults
  • Mermaid costumes for college girls
  • How to dress up as Ariel from The Little Mermaid 

Best of all, this guide with what you need for a DIY mermaid costume is no sew. You don’t have to be crafty or know how to sew!

Easy Mermaid Costume Ideas for Adults

Below are mermaid costume ideas. Continue reading to learn exactly what you need to create a last-minute DIY mermaid costume.

1. Scary Mermaid DIY Costume for Adults

Want a scary mermaid DIY costume? Here’s an idea for a DIY sexy mermaid costume.

scary mermaid DIY costume for adults
Scary Mermaid

What You Need for a DIY Scary Mermaid Costume: 

Gold Skirt | Mermaid Bikini TopMermaid Headpiece

2. Sexy Mermaid Costumes for College

Are you in college and looking for mermaid costume inspiration? Below are photos of college women dressed up for Halloween as Mermaids.

sexy mermaid costumes for college girls
Love a Mermaid!

Dress Up as these DIY Adult Mermaids for Halloween:

Pink Metallic Skirt | Mermaid Top | Mermaid Face Glitter

3. Blue DIY Easy Mermaid Costumes for College

fun blue mermaid college costumes
Super Easy DIY Costume

Get These Mermaid DIY Costumes:

Blue Metallic Skirt | Mermaid Crop Top | Mermaid Hair Accessories

4. Sexy Rhinestone Mermaid Bra Top for DIY Mermaid Costume

Mermaid DIY costume for adults top
Available in Green, Gold, Blue, and Silver

Get this Mermaid Halloween Costume:

Green Mermaid Skirt | Mermaid Rhinestone Bra Top

5. Seashell Bikini Top and Skirt for DIY Mermaid Costume

DIY mermaid top
Mermaid Seashell Bikini Top

Get this Sexy Mermaid Costume:

Mermaid Skirt | Mermaid Bikini Top | Mermaid Shell Crown

6. College DIY Mermaid Costumes

easy DIY mermaid costumes for college
Perfect for Friends

Get These Mermaid DIY Costumes for College

Mermaid Sequin Skirt | Mermaid Costume Shirt

7. Corset Bra for Mermaid DIY Costume

corset rhinestone top for mermaid DIY costume
Lace Rhinestone Bustier Crop Top

Get this Mermaid Costume:

Mermaid Corset Bra Top | Blue Mermaid Skirt (plus size mermaid skirt sizes available)

8. Purple Mermaid Costume

This mermaid skirt tail looks amazing on women with curves.

curvy mermaid DIY costume for adults with blue mermaid skirt
So Cute!

Get this Purple Mermaid Costume:

Purple Mermaid Skirt | Purple Mermaid Top 

9. Ariel Mermaid Costume

cute mermaid DIY costume for adults with mermaid skirt tail
Fits True to Size

Women say this mermaid skirt is super cute and fits perfectly.

Dress Up as Ariel from Disney's The Little Mermaid:

Ariel Mermaid Skirt | Purple Sequin Tassel Top

10. Mermaid Costume with Pants

mermaid costume with pants
Image via Amazon.com

Get this Mermaid Costume with Pants:

Mermaid Pants | Mermaid Swimsuit Bikini Top

11. Sexy Mermaid Costume

cute DIY mermaid costume for adults
So cute!!

Get this Sexy Mermaid Costume:

Sequin Mermaid Skirt | Mermaid Shell Bra Top 

12. The Little Mermaid Costume

Mermaid Couples Costume with Green Mermaid Skirt
Image via Etsy

Dress Up as Ariel from The Little Mermaid:

The Little Mermaid Skirt | Mermaid Purple Bikini Top

13. The Little Mermaid DIY Costume

cute Little Mermaid costume with dog
So cute!!!

Get this Mermaid Costume for Women:

Green Mermaid Skirt with Tail | Purple Mermaid Corset Top

14. Mermaid Costume for Teenagers

mermaid costume for teenager
Image via Amazon

Get this Mermaid Costume for Teenager:

Ariel Bikini Top | Ariel Green Mermaid Skirt 

For an easy DIY mermaid costume for teenagers, all you need is a mermaid skirt and a cute mermaid top!

15. Real Mermaid Costume

real mermaid costume
Image via AmazonD

Dress Up as a Real Life Mermaid:

Green Mermaid Skirt | Mermaid Bikini Top

Want to dress up as a real life mermaid? Then you'll want a flared mermaid skirt and a glittery bikini top!

DIY Mermaid Costume Plus Size

Searching for a dIYHere are options for easy DIY mermaid costumes for adults in plus size.

You may also want to check out this DIY plus size Ariel costume guide.

DIY Mermaid Plus Size Costume

DIY plus size mermaid costume
DIY Plus Size Mermaid Costume

What You Need for this Sexy DIY Plus Size Mermaid Costume:

Plus Size Mermaid Skirt | Plus Size Mermaid Corset Top

DIY Mermaid Plus Size Costume

plus size DIY mermaid costume on Amazon
So Stunning!

View on Amazon

Get this Plus Size Mermaid Costume:

Plus Size Mermaid Costume with Tail | Plus Size White Bra | Sea Shells (glue onto the bra)

DIY Mermaid Costume Tops

Want a DIY mermaid Halloween costume? First, start with a mermaid top. You can go with a bikini top, seashells, or a tank top. You have so many options with DIY mermaid costumes for women!

Crop Top Mermaid Top

reflective blue mermaid top
Crop Top for Mermaid

View on Amazon

Sparkly Tube Top for Mermaid DIY Costume

Mermaid costumesparkly tube top
Sparkly Tube Top

View on Amazon

Simple Mermaid Bikini Top

The Little Mermaid purple bikini top
Purple Bikini Top

View on Amazon

Mermaid Tails for Costume

A mermaid tail is a MUST for any DIY mermaid Halloween costume for women.

Mermaid Costumes Skirts and Tails for Adults
So Many Skirts to Choose From!

You will LOVE the mermaid tail below. I bought this mermaid tail skirt and it looked great!

Mermaid Tail for Adult Costume (Available in Plus Sizes Up to 2/3XL)

mermaid green tail costume for adults
Mermaid Skirt with Hologram Finish

View on Amazon

Amazon also has other mermaid costume skirts with great ratings:

Mermaid Plus Size Skirt

This mermaid costume skirt comes in sizes up to 4X.

Plus Size Faux Leather Pleated High Waist Maxi Mermaid Skirt
Sizes Up to 4X

View on Amazon

Blue Metallic Hologram Mermaid Skirt with Waist Pearl Chain

blue mermaid hologram shiny skirt tail for women with pearl chain
Skirt by Spooktacular Creations

View on Amazon

Green Metallic Hologram Mermaid Skirt with Waist Pearl Chain

green metallic mermaid skirt with chain
Green Mermaid Skirt

View on Amazon

Mermaid Tail Maxi Skirt (Plus Size Friendly)

This mermaid tail skirt has a flare at the bottom. It also comes in sizes up to XX-Large.

mermaid tail skirt that flares out
Quesera Women's Mermaid Tail

View on Amazon

Mermaid Tail Skirt with Mesh and Sequins (Plus Size Friendly)

This mermaid skirt comes in sizes up to 4X-Large.

Disney Ariel mermaid skirt with flare
Plus Size Friendly

View on Amazon

 

DIY Mermaid Costume Leggings

If you don’t want to wear a skirt, these mermaid leggings are perfect for an easy DIY mermaid costume for adults.

Mermaid Leggings for DIY mermaid costume
Mermaid Leggings for Women: Sizes 0-24

View on Amazon

This is one of my favorite mermaid costumes for adults if you live somewhere cold!

DIY mermaid costume with leggings
So Cute!

View on Amazon

How to Dress Up as The Little Mermaid for Halloween

Here’s what you need to buy to look EXACTLY like Disney’s The Little Mermaid.

Option 1: The Little Mermaid DIY Costume

Disney's The Little Mermaid DIY Costume for Adults
The Little Mermaid Costume

What You Need for this DIY Mermaid Costume for Adults:

Mermaid Hologram Skirt | Pink Mermaid Bikini Top | Ariel Wig

Option 2: The Little Mermaid DIY Costume

DIY The Little Mermaid Costume for Adults
DIY Costume

What You Need for this DIY The Little Mermaid Costume:

Mermaid Flared Skirt | Mermaid Top | Ariel Wig

Option 3: Ariel in Pink Ball Gown Costume

Ariel pink ball gown costume
Image via Amazon

Dress up as Ariel in a Pink Ball Gown:

Ariel Pink Ball Gown | Ariel Wig

Wig for The Little Mermaid Costume DIY

If you want to dress up as The Little Mermaid, you may want to wear a wig.

This red wig is perfect for a The Little Mermaid DIY costume.

The Little Mermaid Wig for Costumes
Ariel Wig

View on Amazon

DIY Mermaid Costume Adults Accessories

A DIY mermaid costume for adults isn’t complete without the right accessories! 

Here’s what you’ll need for the best mermaid costume DIY.

Jewelry for Mermaid Costume DIY

Mermaid Jewelry
Includes Bracelet, Necklace, and Earrings

View on Amazon

Mermaid Crown for DIY Mermaid Costume for Adults

mermaid crown
Image via Amazon

View on Amazon

Mermaid Hair Accessories for Last Minute DIY Mermaid Costume

mermaid hair accessories
Starfish Hair Clips and Glitter Set

View on Amazon

Mermaid Makeup for Mermaid DIY Costume

mermaid makeup
Perfect for Mermaid Makeup!

View on Amazon

Starbucks Mermaid DIY Costume for Adults

Dressing up as a Starbucks mermaid is a fun and unique DIY mermaid costume!

Starbucks mermaid DIY Costume
Starbucks Mermaid Costume

How to Dress Up as a Starbucks Mermaid:

Starbucks Mermaid Skirt | Green Mermaid Hair | Starbucks Mermaid Crown

Best Mermaid Costume Must-Haves

For a DIY mermaid costume, below are some of my favorites!

Mermaid Bra Costume

mermaid bra costume
1-Size on Amazon

View on Amazon

Mermaid Shell Bra

mermaid shell bra
1-Size

View on Amazon

Mermaid Swimsuit Top

Mermaid Swimsuit Top
Sizes: X-Small to X-Large

View on Amazon

Mermaid Skirt Costume

Mermaid Skirt Costume
Sizes: Large and X-Large

View on Amazon

More Mermaid Costume Ideas

Mermaid Costume Ideas - Pinterest 

Plus Size Ariel DIY Costume (from Curvy Styled)

Easy DIY Mermaid Costume for Adults
Easy DIY Mermaid Costume for Adults

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