15 DIY Mermaid Costume Ideas To Be A Lake Princess

DIY Mermaid Costume Ideas

Building a homemade mermaid outfit helps you show off your crafty skills and your unique style. People will enjoy seeing your creation, and you’ll feel proud knowing you made it yourself. Here, we have a fantastic list of DIY mermaid costume ideas that are a great chance to be creative and have fun at the same time. So, why wait? Get started on your magical mermaid costume today!

DIY Mermaid Costume Ideas

DIY Mermaid Costume Ideas 2

Say goodbye to store-bought costumes that don’t truly represent you. Instead, have fun playing with colors and textures, and let your inner mermaid shine. Making your mermaid costume has never been easier or more fun, so take advantage of this exciting adventure!

Follow this amazing series to try making DIY mermaid costumes using the simple ideas we’ve collected for you! Enjoy your creativity and make a special costume that shows off your style. You’ll be proud of the personalized mermaid outfit you create while having a great time doing it.

The simplest supplies for making a mermaid costume are mostly:

  • Dress: For making the dress go with shiny fabric, it suits well with the theme of mermaid style.
  • Scales: You can use craft paper or fleece fabric for making scales, or several techniques are also given below.
  • Tulle:  Usually, the tulle has to be sewn at the bottom of leggings, so go with the glittery or green-colored tulle; they will look great.

DIY Mermaid Costume

DIY Mermaid Costume

Turn your little princess into a Halloween photo prop with this amazing mermaid costume. DIY it today and give the trick-treating pumpkin in his hand to turn your beautiful queen everyone’s favorite. All you have to do is get these supplies on hand:

  • A sequin tee shirt
  • Stretchy scale fabric for the skirt
  • Tulle for the mermaid tail and the shirt trim
  • Elastic for the waist of the skirt
  • Shells to decorate and accessorize
  • Hot glue to attach embellishments
  • Clip or headband for attaching the decorated shells

Start by making a sequin top with tulle trim, then design the skirt with fitted fish scale pattern fabric at the top and tulle at the bottom to resemble a mermaid’s tail. Create a curve shape on the hem to symbolize a mermaid’s base tail and sew in gathered tulle at various sections for volume. Finally, accessorize with shell-adorned clips or headbands for a complete Halloween-inspired look.


DIY Mermaid Halloween Costume

DIY Mermaid Halloween Costume

Let’s be a mermaid for the coming cosplay event and stun everyone around you with its endless charm and stylization following this easier idea. It looks great because of the added shell trouser, and I hope it will be your heartily favorite too.

The materials you need for making this costume are:

  • Glue
  • Felt
  • Tulle
  • Shells
  • Old workout clothes
  • Scissors
  • Glitter
  • Lace Trim
  • Elastic
  • Ribbon

Get a simple sports shirt and leggings and start making this mermaid costume. Cut the felt into a shell shape, use different colored felt paper, and cut it into a shell shape then glue them together, joining each other’s ends. Then sew all those felt shells on leggings starting from the butt and move on to the down part where the tulle is to be sewn. Lastly, make a seashell crossbody banner and complete the look of a mermaid with a felt bead headband.


DIY Little Mermaid Costume

DIY Little Mermaid Costume

If you are creative, this mermaid costume is made for you. You’ll need simple materials like:

  • Long, Red Box Braids
  • Shiny, Stretchy Fabric (Green)
  • Green Tutu
  • Purple Bandeau Swim Top
  • Purple Organza
  • Fake Lily Pad Flower

Get a simple stretchy green fabric on hand and make it a skirt for your mermaid, then sew the green tulle at its bottom to give an appearance like the mermaid’s fins. Later on, you can make a simple bra by sewing purple organza on a swim top. It will look unique, plus the added jewelry set and makeup skills vary from person to person and the style you want to adopt. So why wait to get the supplies on hand and start DIYing? 


Homemade Mermaid Costume

Homemade Mermaid Costume

Are you searching for something cozier and unique for your little girl to turn into a mermaid? Following this easier guide will surely be a great option. It can be done with a bit of crafty skills using the given materials:

  • Mermaid-like dress
  • Sparkly foam sheets
  • Glitter glue
  • Hot glue gun
  • Scissors
  • Fold over elastic
  • Sea star (for headband)

Start with a slightly looser mermaid-like dress sized as 9/10. Then, create the scaly appearance with a sparkly foam sheet cut in the shape of a seashell and glued over one another. You can make the mermaid fins at the back side of your costume for a more fun effect. And turn your cute girl into a beautiful mermaid.


Mermaid Halloween Costume

My Mermaid Halloween Costume

Are you in a rush for a Halloween party and want to be a mermaid queen on that night? Then put your hand on this amazing idea. You’ll need the following materials:

  • Two large scallop seashells
  • Your choice of mixed seashells
  • Corset or strapless bra
  • Shimmery green fabric with some stretch
  • Dark green or turquoise sequined fabric
  • Tulle in different shades of turquoise and blue
  • Needle and thread
  • Straight pins
  • Scissors
  • Hot glue gun

Making an amazing mermaid costume is quite fun; go with the seashell bra, get a simple corset on hand, keep the seashell on it, and secure it firmly using a hot glue gun. After making the tank portion, wrap the fabric dress from the inside out and turn it into layers to create a decent-looking mermaid tail. Lastly, add multi-colored tulle to the bottom of your mermaid tails, and bang, and you’ll look like a piece of mermaid came right from a magic lake.


Mother + Daughter Mermaid Costume DIY

Mother + Daughter Mermaid Costume DIY

Make a beautiful mermaid costume following this easier guide for your little daughter and yourself. It will be a great option, especially for cosplay events, Halloween parties, and other fun occasions.

  • Stretch scale printed Spandex fabric.
  • Scissors
  • Sewing pins
  • Nude bodysuits
  • Metallic iron-on sheets
  • Thin foam sheets
  • Elastic
  • Tape measure
  • Sewing machine
  • Iron
  • Matching thread
  • Pencil or marker

Start by sketching the cutting of the mermaid tail design on the spandex fabric, then inset the foam inside that fabric and sew with the elasitc band inside. Secondly, repeat the same process for the mother’s costume and keep the bottom open, plus add a large fabric circle at the skirt end for a flowing mermaid appearance. You can iron the whole fabric of both costumes with the glittery sheet shells, and look more admirable.


DIY Mermaid Costume With A Repositionable Fin

DIY Mermaid Costume With A Repositionable Fin

Let’s make some admirable mermaid costumes for your little one with repositionable fins and turn both of your little girls into beautiful sea princesses. The materials you need for making these costumes are:

Stretch Sequin fabric
Matching thread
More sturdy fabric (like Lycra or Spandex)
Solid Cotton/Lycra Knit fabric
Felt – for the fin
1″ wide elastic
1/4″ wide elastic
Measuring tape
Sewing Machine,
Existing Leggings
Seam Ripper and Tailor’s chalk

Making a DIY mermaid costume involves creativity, sewing skills, and glittery materials. The costume’s construction includes creating a shimmery tail from spandex and sequin fabric, with an overlapped back closure, allowing the wearer’s legs to move freely or be bound together like a real mermaid. Leggings are sewn into the tail costume to fully realise this effect, ensuring it matches the “scale” look.


Mermaid Costume

Mermaid Costume

The inspiration for this costume stemmed from seeing mermaids at a Renaissance festival in Minnesota. Creating this unique mermaid costume involves creativity, craft, and some shopping.

  • Corset
  • Fabric spray paint
  • Shells
  • Pearls
  • Glitter
  • Strong adhesive/glue
  • Mermaid skirt
  • Makeup
  • Jewels

Make this costume easily following the customization continued with the addition of shells, pearls, and glitter, and glued onto the costume. The look was completed by doing her make-up, including applying glued jewels to her face.


DIY Easy Mermaid Costume

DIY Easy Mermaid Costume

The DIY mermaid costume is an imaginative approach for creating a unique and stylish ensemble for Halloween.

  • Shells
  • Rhinestones
  • White tube-top
  • Sparkly, iridescent dress
  • Silver tiara, silver branches, shells, large starfish
  • Props
  • Spray paint
  • Makeup in purples and blues
  • Gems and small starfish
  • Eyelash glue

Start with the costume’s shell bra by decorating store-bought shells with rhinestones and then quick-stitching them onto a white tube top for added comfort and coverage. Next, the mermaid tail skirt will done from a repurposed, sparkly, iridescent dress and transformed into a flowy skirt with beautiful sea green and blue shades. The costume included a DIY crown from a dollar store silver tiara embellished with silver branches, shells, and a large starfish. The look was completed with blue and purple makeup applied to the hair tips and face, glued gems, and small starfish for added detail.


DIY Mermaid Costume Made With Coffee Filters

 easy Costume Made With Coffee Filters

Let manifest every child’s mermaid dream in the most artful way by reflecting the aura of the sea with this amazing DIY Mermaid Costume! Its beautiful watercolor-like effect captures the admirability of craftfulness and will be an excellent combination of imagination and artistry.

  • Plain white art apron
  • Tank top
  • Coffee filters
  • Acrylic paint in ocean colors
  • Paintbrush
  • Glue gun
  • Roll of easel paper

Pair this costume with a plain tank top for a more genuine look. To make the base mermaid costume go with painting several coffee filters using ocean hues of acrylic paint. Glue the Painted Coffee Filters on the Apron. Then, Cut the Apron and Create the Mermaid Tail Shape by drawing the shape of the mermaid tail flukes on a large sheet of easel paper and cut it out. Attach this cut-out to the bottom of the art apron, and you’re done. It will be a fun show off for your craft mastery, and you’ll find it best for Halloween and other photo props.


How To Sew A Mermaid Costume

How To Sew A Costume

Let’s replicate the exact look of a mermaid and make everybody stunned with this superb, amazing, unique costume creation guide.

  • Mermaid fabric
  • Stretch needle
  • Chalk
  • Batting
  • Stuffing
  • Velcro
  • Old leggings
  • Elastic
  • Shirt
  • Wood seashell cutouts
  • Red lipstick
  • Purple wig
  • Starfish accessories

Start by having a stretchy, shiny fabric that goes well for a mermaid’s look, sketch out the fin, and sew the skirt with the fin stuffed in it. Secondly, top the legging with some scale pattern fabric, sew it, and make it look more mermaidy than anything else. For the finishing touch, wear red lipstick and have a purple wig on your head. You can add a seashell-type bra to make this costume more dramatic.


Mermaid Costume DIY

easy to make princess Costume

This DIY Mermaid Costume promises a comfortable and easy-to-make outfit with minimal sewing required. With its sparkly appearance and easy assembly, this mermaid costume offers a fun and creative option for Halloween.

The costume’s main materials include:

  • Jersey fabric
  • Tulle in multiple colors
  • Holographic or metallic foil
  • Plain white t-shirt

Take an old, form-fitting t-shirt (preferably in a sea-inspired color) and slice it up the sides until about mid-thigh to create a fringe. Then, use fabric paint or fabric markers to draw simple scale designs on the t-shirt, emphasizing the upper part of the shirt to resemble a mermaid’s tail. Hot glue some inexpensive faux seashells or plastic pearls onto a plain headband for making the mermaid headband.


How To Add A Mermaid Fin Tail To Leggings

 Costume How To Add A Mermaid Fin Tail To Leggings

The DIY Mermaid Costume will help you transform regular metallic fish scale leggings into a mermaid tail, following this easiest idea. The materials you need for making this costume are:

  • Metallic Fish Scale Leggings
  • Glittered Tulle
  • Fabric Glue
  • Scissors
  • A Shirt

Start by cutting the tulle in half, layered, and folded multiple times to achieve the desired fin tail width and length. This process is performed for both leggings, creating a flare look, with fabric glue securing the tulle to the leggings. Then, the tulle can be sewn to the leggings at the bottom, and lastly, the edges of the tulle flares are slashed to give a fanned-out tail look, and the tail size can be adjusted depending on the dramatic effect desired.


DIY Mermaid Costume Easy To Create

Costume Easy To Create

This DIY mermaid costume is both imaginative and special, bringing a touch of undersea charm and showcasing the beauty of the legendary mermaid!

  • Felt material
  • Chalk
  • Scissors
  • Glitter Cricut Iron On
  • Sharpie
  • Glitter tulle (6in wide)
  • E6000 glue
  • Safety pin
  • Fishing wire or silver ribbon
  • Splat Hair Chalk

Draw the shape of a mermaid tail on a piece of felt. Then, using scissors, cut out the shape you’ve drawn. Take glitter Cricut Iron On and lay the felt “fin” onto it. Trace the fin shape with a Sharpie before cutting it out with scissors. Then, adjust the scale’s ends to match the felt ends and curl the ends of the scales to make the tail appear more realistic. When you reach the tail’s curve, keep the pattern but angle the scales like candy cane stripes.


DIY Mermaid Costume With Joann

Costume With Joann

This DIY Mermaid Costume can be a fun and creative project for anyone to explore and is surely great for looking like a lake princess with minimal effort. However, this costume is made for a pregnant woman. You’ll need the given materials for making this costume like:

  • Mermaid Poly Spandex Fabric
  • Green Oil Slick Fabric
  • Metallic Turquoise 4-way Stretch Fabric
  • Shells and Knick-Knacks
  • Cricut Machine
  • Canva

The first step is to make the top of your costume. For this, use the Metallic Turquoise 4-way stretch fabric. Then, make the skirt; it’s the most complex part of the costume. Begin by cutting the Mermaid Poly Spandex fabric into a shape that looks like a bell curve, representing the front of the skirt. Then, cut two more pieces for the back. Sew them together along the curved edge, and you’re done.


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