Best Designer One-Piece Swimsuits for Girls of 2025

The Varsany Girls Swimsuit is perfect for all watery activities, ensuring you stay cool and comfortable whether you're swimming or relaxing by the pool. You can personalise this beautiful swimwear with your child's name adorned in sparkling diamante crystals, making them feel special. Crafted from stretchy and breathable fabric, it reduces friction in the water, ideal for racing or triathlons. Additionally, the swimsuit is fade-resistant and retains its shape, ensuring it lasts through frequent use while remaining easy to care for.

The Flintronic Mermaid Swimsuit is crafted from a comfortable blend of 85% polyester and 15% spandex, ensuring it feels soft against your little one’s skin. The swimsuit features adjustable shoulder straps, allowing you to customise the fit for your child, preventing any slips during wear. Its unique backless design not only adds style but also keeps your girl cool during hot summer days. With its vibrant mermaid scale pattern, this swimsuit will make your child stand out at swimming lessons, the beach, or the pool.

The Sam Caan Girl's Swimsuit offers a comfortable fit and excellent flexibility, allowing you to enjoy your swim without feeling restricted. With its unique design, you can dive, row, or partake in various water sports confidently. The fabric is specially crafted to retain its shape, ensuring you always look good in the water. Plus, its chlorine-resistant material means it will maintain its quality and fit for longer, making it an ideal choice for regular swimmers.

The ZNYUNE Girls Swimsuit Set is designed for comfort and protection during water activities. Made from 80% polyamide and 20% elasthanne, it features UPF 50+ fabric that blocks over 98% of harmful UVA and UVB rays, ensuring your skin is safe from sun exposure. The unique 3-D printed leaf patterns and flatlock stitching help reduce chaffing, allowing for a smooth experience while swimming. Its versatile long sleeve and adjustable straps provide a chic look and a comfortable fit, perfect for active days at the beach.

The Disney Ariel Swimsuit is perfect for making beach days magical. With its vibrant pink design featuring Princess Ariel and Flounder, your little one will feel like a true mermaid. The zip fastening on the back makes dressing easy, allowing for quick changes between swims. Additionally, short sleeves with charming frills add a delightful touch, ensuring comfort while swimming. This one-piece swimsuit combines style and practicality, making it an essential for any Disney-loving girl.

The Lito Angels Swim Costume is a charming one-piece bathing suit designed for young girls, perfect for summer adventures. With its delightful digital print theme and ruffle design, your little one will look lovely at the beach or poolside. The included accessories, such as a necklace and floral hair clip, add an extra touch of fun. Made from lightweight and breathable polyester, this swimsuit ensures comfort and ease of movement, making it ideal for swimming lessons and water activities.

The Aisyee Girls Swimsuit is designed for comfort and style, making it perfect for summer adventures. With adjustable buckles and elegant flounces, it provides a flattering fit for various body types. Its breathable fabric ensures your child stays comfortable during beach trips or swimming lessons. The vibrant colours are not only eye-catching but also resistant to fading, allowing your little one to shine brightly by the pool or beach. It's a versatile choice suitable for various occasions, from parties to holidays.

The Gifts Treat Mermaid Swimsuit is designed specifically for 10-year-old girls, ensuring a perfect fit when you consult the size chart. Its bright bling bling mermaid scale patterns create a magical experience during playtime in the pool. Made from a blend of 84% recycled polyester and 16% elastane, this swimsuit is not only comfortable but also environmentally conscious. The attractive pink fade print adds a simple yet eye-catching element, making it an essential piece for trips to the beach or pool.

The Aisyee Girls Swimsuit is designed for comfort and style, making it perfect for summer outings. With adjustable buckles and elegant flounces, it accommodates various body shapes, ensuring a great fit. The swimsuit is made from soft, lightweight fabrics that are breathable, keeping your child comfortable during beach trips. Its vibrant colours resist fading, so your girl will shine brightly on the sand. Additionally, this versatile costume is suitable for swimming lessons, pool parties, and birthday gifts, making it a fantastic choice for any occasion.

The AmzBarley Mermaid Swimsuit is perfect for your little princess. Made from soft and skin-friendly polyester, it ensures comfort during wear. Its quick-drying and breathable fabric means your child can play in the water without feeling uncomfortable. Additionally, the swimsuit is designed to resist chlorine and salt, providing durability for long-lasting use. With its charming leopard print and ruffle skirt, this one-piece swimsuit offers a flattering look that your child will love for swimming, beach holidays, and pool parties.