In stock
Girls Rainbow Mermaid Bikini Costume with Swimmable Tail - 3 Piece Set
- SKU:
- tt2056 tt2008
Size Chart
Same Day Dispatch
Order by 2pm AEST
Easy Returns
14 days
Melbourne Stock
Fast local delivery
Product Details
What's Included
- Halter Top Bikini (stretch material)
- Pants
- Swimmable Tail (zip on the side)
- Black Monofin
The halter top secures via a centre front clip, while the elasticated briefs provide comfortable coverage for active pool play. The swimmable tail features a full-length side zipper for easy foot insertion, internal monofin pocket, and structured pectoral fins with holographic striping. The pleated fluke adds dramatic flair both above and below water.
Key Features
- Detachable monofin insert with anti-breaking reinforced construction
- Side zipper on tail for quick entry and removal
- Holographic pectoral fins with internal shaping for shape retention
Perfect For
Pool Parties & Swim Birthdays: Whether it's a mermaid-themed pool party, aquatic birthday celebration, or backyard swim day, the detachable tail lets her switch between bikini mode for active swimming and full costume mode for dramatic entrances.
Beach Play & Resort Holidays: Ideal for beach holidays, resort pools, water parks and summer swim sessions where fantasy dress-up meets genuine aquatic function.
Photo Shoots & Dress-Up: The holographic fins and pleated fluke create eye-catching underwater movement for aquatic photography sessions, mermaid role-play, and fantasy-themed dress-up.
Frequently Asked Questions
The monofin insert allows underwater propulsion with a dolphin-kick motion. Adult supervision is required in pools and open water when wearing the full tail ensemble.
You receive the halter top, elasticated briefs, full-length swimmable tail with side zipper, and a detachable reinforced monofin. No additional accessories are required for the mermaid transformation.
Yes — the monofin slides into an internal pocket and can be removed for poolside posing or when she wants the mermaid look without the underwater propulsion function.
The pectoral fins feature internal stiffening to maintain their wing-like silhouette both above and below water. The pleated fluke adds movement while retaining structure during swimming.
Looking for more options? Browse all costume bikinis or our mermaid costumes range.
Shipping, Returns & Support
Shipping, Returns & Support
We dispatch quickly from our Melbourne warehouse and offer reliable delivery across Australia. Easy returns and fast support are available if you need help.
Delivery
✔ Dispatch within 1 business day
✔ Same day dispatch before 2pm
✔ Australia-wide delivery with tracking
Returns
✔ Easy 14-day returns & exchanges on eligible items
When will my order arrive?
Most orders arrive within 2–6 business days depending on your location.
Can I return this item?
Yes, we offer easy 14-day returns on eligible items.
Need help choosing the right size?
Ask our assistant — it checks sizes and stock instantly, and passes you to our team if needed.
Or email: sales@costumesinaustralia.com.au
Delivery timeframes shown anywhere on our website (including the postcode delivery estimator) are estimates only, based on Australia Post's published delivery standards, and are not guaranteed. We dispatch from our Melbourne warehouse; once an order leaves us, delivery is carried out entirely by Australia Post and is outside our control. We cannot be held responsible for delays caused by Australia Post, weather, peak or seasonal volumes, incorrect or incomplete addresses, or public holidays. Such delays are not grounds for a refund, replacement or cancellation.
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