Sea Mermaid Halloween Costume Set
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Shipping happens within 1 business days, and delivery takes around 5 to 12 business days worldwide, depending on your location.
Sea Mermaid Halloween Costume Set
For the girl who wants to be beautiful and a little bit terrifying at the same time — and refuses to choose between the two.
Beautiful, and Just a Little Haunted
Shimmering silver bones trace their way down deep black satin, from the shell-crowned neckline to the very tip of the tail. It's a mermaid who has been down in the dark water a very long time — and she has never looked more glamorous. This is the costume that makes the whole room turn around.
What's in the Set
Two pieces, one complete transformation — both arrive together.
Lovingly Detailed
- Glittering silver skeleton print running from the ribcage all the way down the tail
- Shell-shaped neckline detail set with a dark jewel at the centre
- Sweet flutter sleeves in soft sheer mesh
- Fitted mermaid silhouette that opens into a glittery tulle tail fin
- Lace-trimmed waist that divides the bodice from the tail
Why Mamas Love This
- Spooky and pretty at once — no need to pick one or the other
- Stands out from a street full of the same few costumes
- Photographs beautifully, especially against a dark background
- Perfect for costume parties, parades and Halloween nights
- The kind of costume she'll remember being, not just wearing
What Little Mermaids Are Saying
"She had been asking for something 'pretty but creepy' for weeks and this was it. The silver print really does glitter under a light. Do note the tail is fitted, so she takes little steps in it — she loved that, said it made her walk like a real mermaid."
Size Guide
Not sure which size? Start with her age — then check the measurements below. If she's between sizes, we always recommend going one size up.
| Recommended Age | Size | Dress Length (cm) | Bust (cm) | Waist (cm) |
|---|---|---|---|---|
| 2T | 100 | 78 | 57 | 54 |
| 3T | 110 | 84 | 60 | 57 |
| 4T | 120 | 90 | 63 | 60 |
| 5–6T | 130 | 96 | 66 | 63 |
| 7–8T | 140 | 102 | 69 | 66 |
| 9–10T | 150 | 108 | 72 | 69 |
All measurements are in centimetres and may vary slightly by 1–3 cm due to manual measurement. Ages are a guide only — please compare with her own measurements for the best fit. Colours may look a little different depending on your lighting and screen.
She'll come back from the party still walking like a mermaid. That's how you know it worked.
Pairs well with
Changed your mind?
No worries! You can return your items within14 days, no explanation needed.
We want you and your little one to always feel enchanted!
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For over 10 years, turning moments into memories around the world!
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Sea Mermaid Halloween Costume Set