19 Best Tummy-Control Swimsuits, From Bikinis to One-Pieces 2025

• What we love: Underwire for bust support; compressive fabric; smoothing
• Worth noting: Sizes run small; underwire isn’t comfortable for everyone; pricey

This Miraclesuit one-piece is designed to sculpt, smooth, and support in all the right places. The brand’s signature tummy-control fabric provides firm yet comfortable compression without panels, helping to shape and define your silhouette without feeling too tight. The crisscross surplice neckline enhances curves while offering a universally flattering fit, and its subtle underwire delivers extra lift and structure. Thoughtful ruching across the midsection creates a slimming effect (without going overboard), while the full-coverage bottom ensures you feel confident from every angle. Pro tip: Be sure to use the sizing chart, which takes into account your bust, waist, and hip measurements.

“My tummy feels very flattened, smoothed, and supported when I wear my Miraclesuit,” says one Glamour tester. “I like that none of the flesh under my suit moves when I do.”

Sizes: 8–18 | Material: Nylon, Lycra spandex | Colors: 26 | Padding: Yes (nonremovable) | Compression: Strong