Girls Mermaid Tail Costume - Swimmable Rainbow Bikini Set with Monofin

What's Included

• Hot pink halter-neck bikini top with triple-tier ruffle detail and self-tie closure
• Hot pink mid-rise bikini bottoms with elasticized waist and leg openings
• Rainbow gradient mermaid tail (yellow to cyan to blue to purple to pink) with embossed scale texture, flared fin with multicolor stripe detail, side zip closure, and integrated foot pocket for black monofin

The Girls Mermaid Tail Mermaid costume is a 3-piece swimmable set designed for active water play. The rainbow gradient tail transitions from sunny yellow through aqua and sapphire to violet and hot pink, finished with a flowing curved fin that features translucent rainbow stripe detail.

The halter bikini top is constructed from swimsuit-grade stretch fabric with a triple-tier ruffle across the chest and self-tie neck closure for adjustable fit. The tail is form-fitting spandex blend with heat-pressed dimensional scale texture, reinforced stitching along the fin edges, and a side zipper that runs the length of the leg seam for easy entry and exit. The integrated foot pocket holds the included black monofin, allowing swimmers to glide through the water with realistic mermaid propulsion.

Key Features

• Rainbow gradient tail: yellow to cyan to blue to purple to pink colour flow
• Swimmable spandex/polyester blend suitable for chlorinated pools and saltwater
• Side zip closure on tail for quick on/off without removing monofin
• Triple-tier ruffle halter top with elasticized support band beneath ruffles
• Embossed scale texture across entire tail body for dimensional mermaid effect

Perfect For

Mermaid-Themed Pool Parties & Beach Days: Whether it's a mermaid birthday party at the local pool, a beach play date with underwater tea party games, or a summer swimming lesson with fantasy costume flair.

Fancy Dress Swimming Sessions & Aquatic Dress-Up: Perfect for splash park visits, backyard pool dress-up days, or resort kids' club mermaid events where swimmable costumes are encouraged.

Book Week Pool Events & Aquatic Character Days: Ideal for schools hosting underwater-themed Book Week celebrations, mermaid story units, or fantasy literature pool parties where children dress as aquatic characters.

How to Wear It

Pair with waterproof temporary tattoos shaped like scales or starfish for extra detail. Skip heavy jewellery—a simple shell necklace or starfish hair clip completes the look without interfering with swimming.

Frequently Asked Questions

Care: Hand wash cold, rinse after chlorine/salt exposure, dry flat.

Looking for more options? Browse all costume bikinis or our mermaid costumes range.