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Girls' Halloween Mermaid Costume with Accessories for Dress-Up Party

£50.00 Regular price £95.00 47% off today
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Transform into an Enchanted Mermaid with This Complete Costume Outfit

This girls mermaid costume delivers instant magical transformation with a stunning purple and teal dress, shimmering metallic scales, and all the accessories needed for a complete mermaid princess-inspired look. Crafted from quality materials with eye-catching sequin details, this mermaid theme dress is perfect for Halloween parties, dress-up play, birthday celebrations, and themed events. The included matching accessories—headband, wand, purse, and jewelry set—make it an all-in-one costume solution that requires no hunting for extras.

Girls' Halloween Mermaid Costume with Accessories for Dress-Up Party

A seasonal best seller every Halloween — this complete mermaid outfit has parents and kids coming back year after year.

Halloween stock sells out fast — order early. Dispatched within 24–48 hours.

Why You'll Love This Mermaid Costume

  • Magical mermaid transformation: Purple and teal colouring with metallic scale patterns and gold sequin trim create an authentic, enchanting look that brings fantasy to life.
  • Complete dress-up package: Includes matching floral headband, toy wand, sequined purse, and jewelry set — everything needed for an instant, polished mermaid princess mermaid dress-up experience.
  • Comfortable and easy to wear: Sheer cap sleeves and a peplum waist ruffle ensure a flattering, comfortable fit, while the flared mermaid tail hem allows easy movement for play and dancing.
  • Versatile for any occasion: Ideal for Halloween trick-or-treating, birthday parties, carnival events, photoshoots, and imaginative role-play at home.
  • Reusable year after year: High-quality construction with sequin details and durable fabric means this mermaid costume stays vibrant and wearable for many celebrations to come.

Perfect For

Halloween trick-or-treating: The complete accessories package and eye-catching sequin details make this mermaid princess costume kids' favourite for neighbourhood adventures.

Birthday and themed parties: Transform any celebration into an underwater fantasy with this mermaid tail dress that stands out among other costumes.

Dress-up play and role-play: The included wand, purse, and jewelry set encourage imaginative play and storytelling beyond just one special event.

Photo shoots and special events: The metallic scale pattern and gold swirl bodice create stunning visual details perfect for capturing magical memories.

Girls' Halloween Mermaid Costume with Accessories for Dress-Up Party

Specifications

  • Material: Quality fabric with metallic scale pattern, gold sequin trim, and gold swirl bodice detail
  • Design features: Purple and teal colouring, sheer cap sleeves, peplum waist ruffle, flared mermaid tail hem
  • Available sizes: S, M, L, XL
  • Included accessories: Matching floral headband, toy wand, sequined purse, toy jewelry set

What's in the Box

  • 1x Girls mermaid costume dress
  • 1x Matching floral headband
  • 1x Toy wand
  • 1x Sequined purse
  • 1x Toy jewelry set

Simply slip on the mermaid costume dress, secure the matching headband, and add the accessories for an instant complete look. The durable sequin details and quality fabric are designed to withstand active play and multiple wears. After the celebration, store flat or gently folded in a cool, dry place to keep the costume fresh and ready for next year's magical adventures.

Halloween is almost here — order now so this enchanting mermaid costume arrives in time for your celebration. With fast dispatch and our money-back guarantee, you can shop with confidence knowing your child will have a complete, show-stopping mermaid princess mermaid dress-up experience.

Verified
I was a little skeptical at first

but Weld New York exceeded my expectations. The quality felt great and my order arrived sooner than expected.

James Walker
2 days ago
Verified
Fast shipping and nice quality

The dress looked like the photos and fit really well. I’d order again.

Emily Carter
5 days ago
Verified
Good value for the price

The fabric felt better than I expected and the style was flattering.

Mason Hughes
1 day ago
Verified
Beautiful details

The bag looked polished in person and the finish was clean.

Sophia Lewis
6 days ago
Verified
Stylish and easy to wear

The shoes were comfortable right away and matched the outfit I bought them for.

Charlotte Green
3 days ago
Verified
Helpful customer service

I had a sizing question and got a clear response quickly.

Lucy Bennett
4 days ago
Verified
Nice quality jacket

The material felt substantial and the fit was true to size for me.

Daniel Foster
2 days ago
Verified
Really happy with it

The bag feels sturdy and works well for everyday use.

Clara Wilson
Today
Verified
Smooth shopping experience

Checkout was easy, shipping updates were clear, and the item matched the description.

Sophie Turner
6 days ago
Verified
Simple and elegant

Exactly what I wanted for a clean, dressed-up look.

Claire Morgan
1 day ago
Verified
Nice fabric and fit

The top felt well made and fit close to what I expected from the size chart.

Hannah Collins
5 days ago
Verified
Arrived quickly

Everything was packaged nicely and got here on time.

Thomas Harris
3 days ago
Verified
Easy ordering process

The site was easy to use and the order process was straightforward.

Lauren Mitchell
4 days ago
Verified
Worth the price

After a couple washes the item still looks good and keeps its shape.

Rachel King
2 days ago
Verified
Would recommend

I’ve placed more than one order and have had a good experience each time.

Noah Brooks
6 days ago
Verified
Better than expected

I ordered a set for an event and was pleasantly surprised by the quality.

Ava Reynolds
1 day ago
Verified
Good fit overall

The sizing was pretty accurate and the cut looked flattering on.

Madison Price
5 days ago
Verified
Looks polished in person

The color and finish looked very close to the product photos.

Ethan Parker
Today
Verified
Nice everyday piece

Easy to style and comfortable enough to wear all day.

Brooklyn Hayes
4 days ago
Verified
Quick delivery

My order shipped fast and everything arrived in good condition.

Logan Cooper
2 days ago
Verified
Glad I gave it a try

The item felt well made and looked good right out of the package.

Natalie Simmons
3 days ago
Verified
Nice packaging and presentation

It arrived neatly packed and felt like a thoughtful purchase.

Grace Bennett
6 days ago
Verified
Good first order

This was my first time buying from Weld New York and it went smoothly.

Jack Murphy
1 day ago
Verified
Cute and wearable

The piece was easy to dress up or down and looked like something I’ll wear often.

Zoey Richardson
5 days ago
Verified
Would shop here again

The whole experience was easy and the product met my expectations.

Caleb Morris
2 days ago

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Weld New York

At Weld New York, we have been bringing together the latest clothing, gadgets, and accessories in our (online) store since 1998. We curate products that fit a modern lifestyle—stylish, practical, and always evolving. Whether you are looking for a new outfit or unique items to make your daily life a bit easier or more enjoyable, you will find it all with us.

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