The 11 Best One-Piece Swimsuits To Wear All Summer, From Everlane to Eres
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Set aside your bikinis.
Byrdie / Kevin Liang
While one-piece swimsuits are all too often relegated to a second place, the reality is that they’re always in style, if not a critical component of your collection. One-piece swimsuits marry classic style and extreme comfort. They also boast versatility, as you can wear them as tops when teamed with your favorite midi skirt or pair of tailored shorts.
Swimsuit designer Marilena Andreadis tells Byrdie that one-piece swimsuits have a timeless appeal capable of making us feel classy and confident. “A well-constructed one-piece made with quality fabric will enhance the female body and make a woman feel her best,” she says.
Whether it’s for a magical escape to Maui or a jaunt through the Greek isles (the landscapes that inspire Andreadis every season), there’s a one-piece that’s calling your name. Ahead, find some of Byrdie’s favorite one-pieces on the market right now, along with expert advice from Andreadis on what to look for when shopping for one.
Best Overall: Everlane The Square-Neck One-Piece
Everlane’s swimsuit line gets our vote for the best overall pick. After all, can you go wrong with a sleek one-piece for $70? Note the small but significant details that the low-back, square-neck suit boasts, from the built-in shelf bra for extra support to the recycled nylon material for eco-friendliness.
Price at time of publish: $70
Material: 82% ECONYL® Regenerated Nylon, 18% elastane | Size Range: XXS–XXL
Best Budget: CUPSHE Gracie Color Block Twist One Piece Swimsuit
Lounge poolside in the CUPSHE, a teal-and-navy colorblock one-piece. Its two-tone plunging neckline resembles the whimsical disco era of the ‘70s, making it a stylish pick for a pool party vibe. Wearing yours with a bucket hat and wide-legged linen pants will complete the look.
Price at time of publish: $20
Material: 80% chinlon, 20% spandex | Size Range: XS–XL
Best Designer: Eres Les Essentiels Cassiopee Bandeau Swimsuit
A heritage brand, Eres has been around for 40 years and is known for sizing expertise. Their bandeau one-piece suits are made of a soft, smoothing fabric called peau douce, which translates to “smooth skin,” and mirrors your glowing complexion. We love that this comes in a palette of eight hues, plus there’s no need to worry about hard-to-hide tan lines. The U-ring design seamlessly secures your top and shapes all curves. After trying this on, our take is that it’s “smooth and comfy;" however, going up a size might be necessary to avoid discomfort in the chest area.
Price at time of publish: $555
Material: 77% polyamide, 23% elastane | Size Range: XXS–XXL
Best Strapless: Tommy Bahama Breaker Bay Stripe One-Piece Swimsuit
Tommy Bahama's Breaker Bay Stripe One-Piece Swimsuit is a traditional strapless one-piece with tummy control and flattering side seams. With the brand's island-inspired style, this double chocolate hue pairs well with bright tropical cover-ups. Made from UPF 50+ fabric that is cut in a way that accentuates curves, this swimsuit has a high-cut leg and a gently rounded neckline.
Price at time of publish: $148
Material: 92% nylon, 8% spandex | Size Range: 2–16
Best High-Neck: SYROKAN Women's Athletic One Piece Swimsuit
This one-piece by SYROKAN is a good option if you prefer your one-pieces to have more top coverage. The high neckline and built-in removable cups keep the bust in place, making it ideal for water sports like swimming and paddleboarding. We recommend using the size chart in the photos to help you find the perfect fit.
Price at time of publish: $30
Material: 82% polyamide, 18% spandex | Size Range: 2–16
Best Ruffles: Ramy Brook Nicola Ruffle One-Piece Swimsuit
The self-tie back on Ramy Brook's one-piece makes it a summer adventure-ready piece that is ultra-feminine yet functional. Its V-neck design, stylish ruffle trim, and fixed straps enhance the body's silhouette and give it confidence-boosting coverage. It's easy to see this one-piece becoming a summer staple.
Price at time of publish: $248
Material: Nylon and spandex | Size Range: XXS–XL
Best for Long Torsos: Norma Kamali Marissa One-Piece
You could say Norma Kamali is an expert in swimwear. She’s been in the biz since 1974, with a client list that has included legends like Diana Ross and Farah Fawcett. Her Marissa style makes a statement that reverberates the vibe for which the designer’s best-known—a sort of modern pin-up silhouette with a deep scoop neckline, a plunging back, and low sides to elongate the body and create the illusion of an hourglass shape.
Price at time of publish: $150
Material: 88% nylon, 12% spandex; 100% nylon lining | Size Range: XS–L
Related: The 18 Best Underwire Swimsuits That Lift and Support
Best Monokini: Reina Olga Augusta Scrunch Swimsuit
Contemporary cutouts are the specialty of the Italian swimwear brand Reina Olga. Though, the Augusta Scrunch style is perhaps special for its simple approach to sexy and innovative crinkle-knit fabric (the force behind the brand’s one-size-fits-all sizing) that’s billed to mold to any shape.
Price at time of publish: $186
Material: Nylon and elastane | Size Range: OS
Best One-Shoulder: Anemos The One-Shoulder One-Piece
The One-Shoulder Swimsuit by Anemos has the kind of minimalist restraint that makes you appreciate the impact of small details. The fine curve of the neckline and high-cut leg acutely complement the female form, and it’s cut from fabric protected with UPF 50+ to keep you safe in the sun.
Price at time of publish: $250
Material: 72% polyamide, 28% elastane; UV-protected fabric | Size Range: XS–XL
Best Square-Neck: Hunza G Square Neck One-Piece Swimsuit
This London-based brand was originally launched in the 1980s under the name Hunza and subsequently became famous for a cutout mini dress that Julia Roberts wore in "Pretty Woman." More recently, however, the brand has become known for its very suitable swimwear. (The brand has since been re-launched with its original Creative Director, Peter Meadows, and now specializes in beachwear.) The crinkle knit one-pieces—like this one with a square neck, low back, and high-cut leg—sculpt and flatter every shape.
Price at time of publish: $215
Material: 88% nylon, 12% elastane | Size Range: OS
Best Ruched: J.Crew Ruched Bandeau One-Piece
J.Crew’s ruched strapless bandeau one-piece is simple yet flattering, reviewers on the brand’s website said. Beyond that, they loved it for its additional long torso sizing. “I’m 5’9” and the 8 long is a perfect fit,” one wrote. The style also has built-in UPF 50 sun protection and offers full coverage—everywhere but your décolletage, of course, which will be tan line-free thanks to the strapless neckline.
Price at time of publish: $98
Material: 82% recycled nylon, 18% elastane with a 92% polyester, 8% elastane Repreve® lining | Size Range: 0–24 with additional long torso sizing
Best Scalloped: Cupshe Scalloped V-Neck One Piece Swimsuit
Cupshe offers a well-cut plunge-front scallop one-piece. Even with a deep-cut neckline, the suit's thick, adjustable straps and sewn-in cups provide ample bust support for wearers. The bust cups are even removable, so should you prefer less material, you can customize the fit to your liking.
Price at time of publish: $27
Material: 80% nylon, 20% spandex | Size Range: XS–XL
Final Verdict
Overall, we love the Everlane Square-Neck One-Piece for its eco-friendly design, low back, retro-modern fit, and built-in shelf bra. Eres' Cassiopée strapless suit is a great option if you're looking for a luxury one-piece that fits like a glove and won't give you tan lines. Stripe lovers on Team No Tan Lines may also love Tommy Bahama Breaker Bay Stripe One-Piece Swimsuit or J.Crew's Ruched Bandeau One-Piece swimsuit.
Meet the Expert
Marilena Andreadis is the founder and creative director of MAANislandwear, a brand based in Athens, Greece, that specializes in low-maintenance beachwear.
What to Look for in One-Piece Swimsuits
Design
Swimwear fabrics vary, though high-grade materials will maintain their compressive qualities even with many wears. “The same is true of other materials used in good quality swimsuits, like inseam rubbers,” Andreadis says. Inseam rubbers are especially helpful for strapless designs, to keep the top of the suit from falling down.
From a structural perspective, it’s important to nail down the elements that will make you feel the most supported, such as a high neck, a built-in shelf bra or underwire, thick straps, or a belt. Doing so will help you to narrow your search and ultimately guide you to a piece that you’ll feel confident wearing.
Fit
Navigating fit is essential to finding the perfect one-piece. “Each female body is unique, and it's not [simply] about weight and height,” says Andreadis, adding that women have different preferences when it comes to the fit. “Some women prefer a more structured, thicker feel while others want to feel free and boundless.” If you prefer the former, look for ones that support the bust and the waist with elements like underwire or a more compressive fabric.
Frequently Asked Questions
Do one-piece swimsuits stretch?
Yes. Most swimwear offers a certain amount of stretch. The higher the elastane content, the more stretchy and compressive the fabric is likely to be.
Why choose a one-piece swimsuit over a two-piece?
Often thought of as the mom option, one-pieces are very chic, and choosing a one-piece over a two-piece swimsuit is simply a matter of preference. Both are stylish and practical, so long as you feel attractive and supported in the given silhouette.
Why Trust Byrdie
Hayley Prokos, Byrdie’s Associate Fashion Commerce Editor, wrote this article. She combed through online reviews and spoke to an expert to help compile this list of the best one-piece swimsuits for many kinds of shoppers. She owns swimsuits from several labels on this list and evaluated each piece based on size inclusivity, price point, and style, too.
