One-Piece Swimsuits

Shop women's one-piece swimsuits at Fashionfitz UK — the most flattering and stylish swimwear for every body shape in 2026. Our one-piece swimsuit collection covers every aesthetic from sleek minimalist designs and plunge styles to high-waist silhouettes, crossover cutouts and ribbed constructions that feel as beautiful as they function.

One-piece swimsuits are the most versatile choice in any holiday wardrobe — they transition from pool to beach to waterfront dining without a cover-up, photograph beautifully and provide genuine confidence through considered construction. Every swimsuit in our collection is available in UK sizes S–2XL with free UK delivery.

Why Choose a One-Piece Swimsuit?

The one-piece swimsuit offers an unmatched combination of elegance, practicality and confidence. Built-in support, tummy-control construction and lengthening silhouettes make it the most universally flattering swimwear option available — and the 2026 collection at Fashionfitz proves that practical and beautiful are not a trade-off.