I am so excited to announce that our little mermaid costume was selected as a feature at Everyday Family! Go check out their seriously stellar slideshow of 15 Awesome DIY Halloween Costumes! I am helping to foster some imaginative play with a new addition to our daughter’s dress up box. I’ve written this tutorial for her latest request: a rainbow mermaid costume. Elise is absolutely loving everything ocean and mermaids right now! She has hosted underwater tea parties, gone ‘swimming’ in the living room with her dolphin, jellyfish and octopus stuffed animals, and has even set up a ‘water school’ pretend play session with her FROZEN dolls.
This mermaid costume gives our daughter’s dress up box quite a punch of color and texture and would be perfect for Halloween due to it’s quick assembly and low cost of materials. Click on “Read More” to join the mermaid mayhem here at Ruffles and Rain Boots AND get a bit of a surprise Halloween treat!
80+ blog buddies and I got together to bring you 80+ DIY Halloween costumes, including this adorable rainbow mermaid costume! I’m teaming up to help you craft up DIY Halloween costumes for everyone including your pets, family costumes, and even a trunk or treat idea! Along with my mermaid costume, I’m sharing 88+ more really awesome handmade costume ideas from talented bloggers everywhere!
Before we get to the hop, read through the tutorial below to see how easy this mermaid costume really is!
After Elise’s declaration of her desire to be a ‘rainbow mermaid,’ I did a bit of brainstorming and sketching. This dress up apron costume came together quickly with most everything being on hand in my craft cabinet. Due to the low price of craft felt, this is a VERY inexpensive Halloween mermaid costume or dress up outfit that can be put together for less than $20. Additionally, you can be sure to get any color(s) of the rainbow without having to wait for a spectacular sale on specialty fabrics.
This project takes less than 3 hours to complete, but is easily broken up. You could fit in cutting the felt before your kiddos wake up, the tulle while they are napping (as if), and the rest after the little joys are in bed. Once you’ve secured a
bottle glass of wine, the sewing could also be broken up easily.
After a few inquiries, I am adding this note to all of my dress up apron costume designs: if you want to use this design and make these aprons to sell, please contact me for a license to do so.
Supplies for Mermaid Costume
I’ve rounded each price to the nearest number for ease. If you’re on JoAnn’s mailing list, the project could cost less than I’ve listed because of the ‘stacking’ coupons.
- 12 x 19″ child’s apron from JoAnn’s. These are about $3 each or available in a 3 pack for $10.99. I used a coupon, so it came out to $2.50 for each.
- 1/3 yard of light green satin – I only used this because I had it on hand from working on Elise’s Tinkerbell apron – use any satin or none (this apron would look great with the traditional seashell bra top as well). The price of dress up satin is $4.99 without a coupon, so $1.65. Note: you could probably get away with using a 1/4 of a yard, but know that you will have no wiggle room if the cut (from the store or yours) isn’t spot on.
- 3/4 yard of by-the-yard 3/8″ ribbon trim (I used less but purchased a 3/4 of a yard in case I messed up). $0.75.
- 5 yards of matte tulle in hunter green (the tulle that sells for $1.49 without a sale) $7.45, but you can always find at least a 30% coupon, so about $5.25.
- 1/2 yard of dark green felt by-the-yard, so about $3.00. Or, instead of the rainbow colors listed next, you could get 3/4 of a yard and use all dark green for a more ‘traditional’ mermaid costume. For Disney’s Princess Ariel, from The Little Mermaid, you would need to purchase only dark green, a small amount of light green for the top scallops, and purple for the seashell bra top.
- craft felt in your choice of colors – We always have a metric ton of craft felt sheets on hand, but in order to get the colors I wanted, we purchased a few sheets at $0.30 / sheet. I used 10 sheets, so $3.00.
- sewing notions**, mermaid tail scallop template, mermaid bodice template
**Note: You could accomplish nearly everything with a hot glue gun! If I didn’t have access to a sewing machine, I would sew the tulle together with some hand-stitching, ruffle it and then attach it to the felt via hot glue. I’d probably reinforce the tulle with a few hand stitches as well.
Mermaid Tail Instructions
Step 1: Cut the large piece of felt for the mermaid’s tail. You will use this piece to determine how many strips you will need of each color. I measured my daughter’s waist to the floor and cut out a piece of felt 18 inches by 18 inches. For reference, she is 2.5 years old. When measuring your child, you will want to make sure you are measuring the waist because you want the mermaid’s tail to wrap around to the back. It will extend onto the waist strings of the apron. I then traced where the bottom of the apron would be so I knew to cut it longer there. I folded it in half, eyeballed the shape and drew it on the felt.
The placing of the tail should look something like this from the back. Notice how the entire bottom of the apron is covered by the felt and how the felt extends onto the apron strings.
Step 2: Cut the felt scallops strips. I cut all of the felt scalloped strips in 45 minutes – but I was also making dinner and rocking out to Jack FM, so it might take you less time than that. A note: some of the felt sheets allowed me to get 4 strips and some only 3 – you’ll have to adjust for this because of the variations in craft felt sheets. Using the template and some white chalk, I traced the scallops onto the felt and then cut each out with sharp scissors
Step 3: In order to determine how many scallops strips I needed, I began stacking them on the mermaid tail piece – unattached and uncut. Depending on the height of your child, you may need to use more than 10 felt sheets. Once I knew I had the correct number of felt scallops, I put them aside and focused on the tulle.
Step 4: I cut all 5 yards of the tulle into 42 inch by 20 inch sheets. I then folded the tulle over (making them 42 x 10), double-layered. Taking half of them, I lined up their top edges and ran a hand stitched basting stitch to make sure they didn’t move. Are you excited that this mermaid costume is coming together?
Then, I pinned it to the felt along the sides of the mermaid’s tail felt piece, making 1/2 inch (or so) pleats, about 2.5 inches from the edge. The tulle extended from the bottom point of the mermaid’s tail to about 8.5 inches from the top of the tail. Your positioning from the top will depend on the height of your child.
Using coordinating thread, I sewed that sucker with so much reinforcing that Hercules couldn’t pull it off. I have a tendency to over-sew things I know my daughter will use a lot. The point? Just get that tulle on there so it doesn’t come off. Once you have it on there, go ahead and cut off any excess (keep the tulle in alignment with the tail).
Repeat for the other side.
Don’t worry if they don’t match up perfectly – I had to cut some off the bottom to get them even and an appropriate length for my daughter. Tulle is ridiculously forgiving so you can clean it up later if your cuts weren’t perfect. Mine were – ahem – not. Sorry about the quality of the photo – I was shaking with laughter!
Step 5: Now, the next bit of awesomeness is going to seem a bit like herding cats, but stay with me as it is not difficult, just difficult to explain. Pin the scalloped felt pieces to your mermaid tail the way you want them to look once completed. This is the time to trim down the felt scallops and position the pieces when you need two of them to complete a row. I found it helpful to turn the entire piece over to cut the scallops down to match the tail. You want the pinned pieces exactly as you want the finished mermaid tail.
I overlapped a bit of the felt scallop so that it wouldn’t have a big, gaping dark green spot visible between the colored strips. I know, I’m completely neurotic, but if I didn’t overlap it, the dark green felt would show through when she was belting out song-and-dance numbers. And we couldn’t have that in a fabulous mermaid costume, now could we?
Step 6: Once you have all pieces where you want them, start sewing them on. I would pin up the scallop above the one I was sewing to keep it out of the way and it worked fine. There was no way I was going to keep pinning and unpinning everything which is probably the way you’re supposed to do it. Supposed to shmuposed to. My way worked and it was relatively painless.
Note: I used one color of thread because there was zero way I was going to keep swapping out thread colors or try to coordinate sewing all strips of one color at a time. I am not that lucky that it would work out perfectly and then I’d be cursing while wielding a seam ripper and a bottle of wine. Other than the wine, that’s just not good for anyone.
Once you’ve sewn all except the top row, swap out some color-coordinating thread for that last bit of felt and sew it on. Stand back and celebrate – you just finished a mermaid tail!
If you do not want the bodice, but want the traditional seashell bra top, see my instructions included in the mermaid purse tutorial. Once the shells are done, secure the shells to the apron and skip to step 1 under the Assembly sub header.
Step 1: Cut out the bodice template and roll hem one side of the bodice to provide a clean edge with which to wrap around the apron (fold over twice to prevent fraying). You will then want to fold the bottom corner into a point and roll hem the bottom edge on the same side. Repeat on the other side.
Note: the pattern should take up the entire length of an 8.5 inch by 11 inch paper. Enlarge your image on your printer if your settings aren’t producing this, but the pattern should be edge to edge (left edge is the fold, right edge should have the side point of the bodice).
Step 2: Iron the bodice piece. Fold down the ‘straps’ of the bodice and wrap the edges of the bodice around the edges of the apron. Pin in place after making sure the centers of the bodice and the apron are aligned. Pin the bottom of the bodice. Sew the sides to the apron by wrapping the edges of the satin bodice around the apron’s sides. I left the bottom free to allow movement.
Step 3: Add the ribbon trim. I know of no way other than to pin-the-ever-lovin’-goodness out of the ribbon and sew it into place. I use a lot of pins when I do this because well, I’m not too great at this sewing thing yet. Remember when I said even a beginner could make this mermaid costume? Yep, that’s me!
You have a decision to make here. You can have the bodice lie on top of the mermaid tail or under it. I chose under it because I wanted to add some ocean friends for my daughter, but you could put the bodice on top of the mermaid’s tail (like our FROZEN Inspired Princess Anna dress up costume tutorial).
Step 1: I sewed the mermaid’s tail to the apron over the bodice, making sure to center the mermaid’s tail with the center of the apron and bodice. Note that the sides of the mermaid tail should overlap onto the apron’s strings because you want it to wrap around the child’s waist a little.
Step 2: Trim the bottom of the tulle to make it even (or to finish sizing it to your child). And now, you’re done with the apron! Let your child abscond with it for hours (or days in my case) while you keep putting off making the little felt friends she asked for like I made on her mermaid purse. To learn how to easily make them with my lazy-crafter’s cheat, visit our mermaid purse tutorial.
Here’s a little cutie in mid-mermaid-twirl, rocking her brand new rainbow mermaid costume!
Thank you for sharing time with us today. If you’re looking for other dress up options, consider our other dress up costume tutorials:
Tutorial for Princess Anna Dress Up Costume
Tutorial for Princess Queen Elsa Dress Up Costume
Tutorial for Mermaid Dress Up Apron Costume
Tutorial for Tinkerbell Dress Up Costume
Under the sea, mermaid or pirate party no sew felt party or favor bag
Easy star wand tutorial for holiday, princess or fairy party
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And now, on to the hop! It’s time for tons more DIY Halloween costume inspiration! Join in on the BLOG HOP! Click on the links below each collage to get the detailed instructions about how to make the costume pictured, just like mine above. Don’t forget to follow the Handamde Halloween Costumes Pinterest Board for even more DIY costume greatness!
10. Marty McFly
27. Elsa crown
36. DIY Cat Costume
38. Easy Frozen Costumes (Carrisa!!)
58. Elephant and Piggie Halloween Costumes
70. DIY Skunk Mask
What handmade costume ideas did you love the most?! Be sure to click over to get the costume instructions, pin the costume, and let them know you love it! Where we party: our list of link parties where we’ve shared Ruffles and Rain Boots’ playful creativity.