Girls Swimmable Mermaid Tail Costume with Bikini Top and Monofin

What's Included

• Halter-neck bikini top with ruffled flounce overlay in iridescent pink-purple-blue gradient (stretch polyester with holographic scale print)
• High-waisted mermaid tail skirt with flared fin and vertical side zipper for monofin insertion (shimmery scale-patterned fabric)
• Black neoprene-style monofin with sock-style ankle retention for secure water fit

The Girls Swimmable Mermaid Tail Costume with Bikini Top and Monofin is a three-piece pool-ready set designed for water-based play and underwater-themed dress-up events.

The iridescent gradient shifts from pink to purple to blue across the entire costume, creating a realistic scale-patterned effect that catches light in the water. The halter bikini top features a ruffled flounce overlay and coordinating blue-purple straps, while the high-waisted tail skirt sits over a separate bikini bottom piece and includes a vertical side zipper that opens to insert the black monofin.

Key Features

• Holographic scale-print fabric with iridescent pink-purple-blue gradient for realistic underwater shimmer
• Functional swimmable tail with flared fin and side zipper access for monofin
• Black neoprene monofin with ankle retention design for secure pool use and quick release
• Halter-neck bikini top with stretch material and tie/clasp closure for adjustable fit
• High-waisted tail skirt design allows movement and layering over swimwear bottoms

Perfect For

Pool Parties & Beach Outings: Fully swimmable costume set designed for water-based play at backyard pool parties, community swimming centres, or beach trips where costume-themed swimming is part of the fun.

Mermaid-Themed Birthday Parties: Ideal for underwater-themed birthday celebrations, mermaid princess parties, or ocean adventure events where guests swim and play in costume.

Dress-Up Water Play: Perfect for swimming lessons with a costume component, water park visits, mermaid camp activities, or any event that combines fantasy dress-up with functional swimwear.

How to Wear It

Wear bikini bottom piece under the tail skirt; halter top ties at neck and back. Insert monofin through side zipper of tail skirt before entering water. Pair with floral crown or shell accessories for full mermaid princess effect on dry land.

Frequently Asked Questions

Care: Hand wash cold, lay flat to dry, no machine drying.

Love this look? Explore more costume bikinis or browse our full range of mermaid costumes.