7 Best Tummy-Control Swimsuits, Tested by Glamour Editors

Best Overall: Spanx SpanxSculpt Swim Square-Neck One-Piece

What we love: A classic one-piece that acts like shapewear, this Spanx swimsuit provides a clean, slimming effect. The compression is on the strong side, giving structure through the midsection, with full coverage in the back. “If you’re looking for a high-quality one-piece that skips all the ruching of other tummy control swimsuits, this delivers,” says Glamour commerce editor Malia Griggs, who owns a similar scoop-neck style of the suit. “The bathing suit offers comfortable definition through my belly, holds its shape through hours of wear, and the fabric dries super fast.” The UPF 50+ sun-protective fabric and plus sizes up to 3X add to its everyday appeal—and it’s versatile enough to style as a bodysuit with shorts or a skirt.

Best for Firm Compression: Magicsuit Kristi Marquis One-Piece Swimsuit

What we love: Miraclesuit is known for its shaping swimwear, and this one-piece has some of the most noticeable tummy control we tested—without feeling overly tight. Strategic ruching visually smooths the midsection, while the fabric delivers extra-firm support. “I was really surprised by this suit! It has ruching along the tummy that really sucked in my stomach, but it’s unexpectedly comfortable,” says Griggs. “I wore it all afternoon and ran lightly in it, and my stomach and boobs stayed in place. There’s full coverage in the back—nothing too cheeky, no wedgies—and stylish details like a plunging neckline, cutout, and U-shaped hardware kept it from veering into granny territory.”

Best for Big Boobs: TA3 Brazilian Plungey Swimsuit

What we love: This one-piece has topped our list of the best swimsuits for big boobs for years, and it’s also a standout for tummy control. Its supportive shelf bra accommodates up to a K cup—a rarity among shaping swimsuits—while hidden compression panels and a signature lace-up back define the waist for an hourglass silhouette. “I wanted to see whether this skimpier style could actually work on a fuller bust, and I was skeptical,” says Glamour contributor Sarah Chiwaya, who wears an M cup. “I felt lifted and supported in my usual swim size, with only a tiny bit of side boob, and could comfortably lounge and play in the waves.” The plunging neckline and open back keep the look decidedly sexy too.

Best for Customizable Fit: Andie Amalfi One-Piece Swimsuit

What we love: Because bodies—and comfort levels—vary, Andie gives you unusually granular control over how your one-piece fits. Its best-selling Amalfi comes in regular and long-torso lengths, plus cheeky, medium, or full bottom coverage, so you can customize the fit without sizing up or compromising on coverage. Adjustable spaghetti straps and removable cups add even more flexibility, while medium compression gently smooths the midsection without squeezing. “I have a shorter torso and prefer not too cheeky coverage. I love that I can choose exactly that combination,” says Griggs. “The under-bust elastic also kept my boobs snugly against my chest without feeling restrictive.”

Best for Activity: Summersalt The Sidestroke One-Piece

What we love: This is the suit for times when you want extra chest coverage and the reassurance that nothing is going to slip out—whether you’re chasing a kid down the beach, spiking a volleyball, or spending a Saturday poolside with your partner’s parents. It offers substantial coverage across the chest and the brand’s fullest bottom coverage, while a one-shoulder neckline and back cutout keep it from feeling overly covered-up. Diagonal seaming adds medium compression through the midsection and helps hold everything in place. “I felt very secure bouncing around in this suit, and I like that I can bend over without worrying about showing too much,” says Griggs. “As someone with a smaller chest, I did miss having cups or padding for a little extra shape, but the no-cup construction was very comfortable.”

Best for Extra Coverage: Leonisa Full-Coverage Multipurpose Swim Dress

What we love: “I don’t always (or really ever) want to worry about shaving my bikini line, so I appreciate the added coverage of a skirt or shorts,” says Griggs. “The wrap on this one managed to look a little sexy, both defining my waist and skimming over my tummy.” The swim dress looks like a one-piece with a sarong, but the waterproof wrap is built in and can be worn down as a skirt, knotted to the side, or wrapped around the waist like a belt. Moderate compression adds smoothing underneath, while shaped wireless bust cups create a fuller silhouette.

Best for Plus Sizing: Miraclesuit Plus-Size Revele One-Piece Swimsuit

What we love: Here’s a one-piece that comes in an especially good range of extended sizes and offers strong tummy control via draping across the torso and tummy. “The shirring smoothed my belly, while the built-in sculpting gave me a natural-looking hourglass silhouette,” says Chiwaya, who recommends sizing up. “I was especially impressed by the underwire bust support—I didn’t have to remove the sewn-in padding to get enough cup depth.” It’s a classic, supportive suit with shaping that still feels comfortable to wear.

Others we tested but didn’t include

• Andie The Malibu One-Piece, $112: Secure, adjustable coverage with a smoothing ribbed fabric, long-torso sizing, and multiple back-coverage options. We preferred the Amalfi style, however, which feels more versatile.
• Summersalt The Perfect Wrap One-Piece, $125: Flattering wrap construction with snug stomach compression, though the plunge and fixed straps offer less support.
• Spanx SpanxShape Swim Hi-Rise Bikini Bottom, $90: Firm tummy support in a breathable, quick-drying high-rise bottom that stays put. It’s a strong choice if you prefer mixing and matching a bikini.
• Cupshe Good Times Tummy-Control One-Piece Swimsuit, $40: An affordable, firm-compression option, though the shirring is quite pronounced and the thick fabric dries slowly.