10 Best Girls' Athletic One-Piece Swimsuits 2026

Looking for the perfect swimsuit for your little girl? Look no further than our top 10 list of Girls' Athletic One-Piece Swimsuits. We've reviewed and scored many products in the swim category, and we found products ranging from a 7.8 up to a 9.5 score. Our top-rated item is the RuffleButts® Baby/Toddler Girls Ruffle Strap One Piece Swimsuit, with its adorable design and UPF 50+ sun protection. Your little one will be both stylish and safe in the sun. And with its high score of 9.5, you can trust that this suit is the best of the best. Don't settle for less, choose RuffleButts for your little girl's swimwear needs.