Maternity One-Piece Swimsuits

Choose based on your pre-pregnancy size and current measurements of bust, belly, and hips; check each brand’s size chart and consider sizing up if you’re between sizes or want extra room for a growing bump

Early pregnancy most standard one-pieces fit well; mid-to-late pregnancy look for ruched sides, empire waists, or stretch fabrics that accommodate a larger belly; tankini-style one-pieces with adjustable ties can offer flexibility across stages

Prioritize high-elastane blends (e.g., nylon/spandex) for stretch and recovery, chlorine-resistant finishes for pool use, adjustable straps or ties for fit, and built-in shelf bras or removable cups for support

Rinse in cool water after use, hand wash with mild detergent, avoid wringing and heat drying, and keep away from rough surfaces and prolonged sun exposure to preserve fabric and shape

Maternity one-pieces typically range from budget options under $50 to mid-range and higher-priced styles; many shoppers find well-reviewed choices around the mid-range of the market

Many maternity one-pieces made from supportive, chlorine-resistant fabrics are suitable for light to moderate swimming and water exercise, but choose a design with secure straps and adequate bust support for active use

Some maternity one-pieces feature front or side openings, adjustable straps, or wrap styles that allow easier nursing access; check product details for nursing-friendly features if you plan to use the suit postpartum