The 25 Best One-Piece Swimsuits for Summer

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The best one-piece swimsuits are hardly a bore. Ranging from minimal and sleek to sexy as your bittiest bikinis, they qualify as more than cute swimwear. The best one-piece swimsuits are eternally stylish staples for those who prefer more coverage, are often active in the water, or need a suit that can keep up with busy-as-can-be kids.

"One-piece swimwear is a key category where we see interesting developments, season after season," Liane Wiggins, head of womenswear at MatchesFashion, tells BAZAAR. From established labels to new swimwear brands, Wiggins says designers like Johanna Ortiz, Louisa Ballou, and Christopher Esber are "transforming the one-piece swimsuit into a luxury fashion item that can easily integrate into our everyday summer wardrobe rather than being a vacation-only item." Still, the classics remain coveted. "Purchasing a high-quality one-piece swimsuit from the likes of Eres, Bottega Veneta, or Lisa Marie Fernandez is one of the best investments that women can make," Wiggins notes.

Whatever your taste, Wiggins says, "amazing quality fabric and a cut that works for individual body shapes is key to help women feel sexy, empowered, and confident." To curate BAZAAR's edit of the best one-piece swimsuits, we considered Wiggins' expert recommendations along with shopper reviews and our own swimwear tests. Ahead, shop 25 one-piece swimsuits that made the cut, featuring everything from clean lines and cutouts galore to romantic detailing and monogram logos.

Textured One-Piece Swimsuit with Cutouts

With the coverage of a classic one-piece and the mix-and-match effect of a bikini, this color block swimsuit is the best of both worlds.

Sizes: 0–24

What reviewers are saying: "I went against my better judgment ordering a swimsuit online. I’ve never had luck with that…until now! This is just as cute as it is in the pictures and fits perfectly! I absolutely love it!"

Peak Suit

Proof that covered-up swimsuits can still feel exciting, Left on Friday's smoothing one-piece comes in an array of bright colors and features a playful peek-a-boo cutout.

Sizes: XS–XXL

What reviewers are saying: "I struggle to find one piece suits that fit my long torso—even long torso suits often don't work for me. I took a gamble on this (Sized up one size from my usual) and so happy I did. It's super flattering, stays on well, and fits great (no wedgies or low boobs, as my long-torso gals can probably relate to). It's the cool, non-mom-ish one piece of my dreams."

The Olivia One Piece

Juillet's small-batch designs feature fabrics that are ultra-soft yet supportive, plus a vintage aesthetic with modern fits. We love the twisted detailing and dare-to-bare plunging neckline on this one-piece design, made even better by the low back and wide straps.

Sizes: XS–XL

The Marco One Piece

Andie's ribbed fabrics have a soft, comfortable handfeel made for lounging all day on a beach chair. When you're up and about, this one-piece swimsuit has a medium leg and bottom cut, plus wide supportive straps, for a secure fit.

Sizes: XS–XXXL

What reviewers are saying: "I loved this one piece so much I didn’t want to take it off. I loved that it didn’t dig into my hips, but just created a smooth profile. If I could take off a half a star it would be for the fabric under the armpits, which is a little pleated/wrinkled. It may be because I’m smaller on top than on the bottom. But it still looks amazing!"

Square-Neck Crinkle-Knit Swimsuit

Hunza G's square-neck maillot is a mega best-seller, coming in tons of colors with new shades each season. "The fabrication enhances curves," Wiggins tells BAZAAR.com. Adding, "Cleverly, the one-size offering works for a diverse range of sizes."

Sizes: One size

What reviewers are saying: "CUTEST swimsuit, one size truly does fit all, and you can make it fit however you wish, cheeky or full coverage in the booty! Love the bright color too!"

Santa Barbara Scalloped One-Shoulder Swimsuit

Featuring Marysia's signature scallop detailing, this one-piece is the modern LBD of your swimwear collection. "Marysia's Santa Barbara one-shoulder swimsuit is flattering, whilst the signature scallop adds a sexier fashion touch," Wiggins says.

Sizes: S–XL

What reviewers are saying: "Just looks great on," "Beautifully made bathing suit," and "Very flattering."

Sculpting Swim Bodysuit

Here's a classic, sexy one-piece with a special twist: It's a shaping and sculpting miracle, with four times the compression of other swimsuits.

Sizes: XS–2X

What reviewers are saying: "This is my favorite one-piece and I absolutely love it. I feel so comfortable yet perfectly sculpted."

Cassiopée Bandeau Swimsuit

"Eres's Cassiopée Bandeau Swimsuit is a favorite as it looks clean and modern, and the strapless fit with bust with the support is extremely conformable and flattering on curves," Wiggins says. "I also love any style with a square neckline and a low back, as it's really flattering for customers with curves but also for more petite customers."

Sizes: 38 FR–48 FR

Scoop Neck One Piece

Whether in this eye-popping neon green or a classic neutral, SKIMS' slinky one-piece swimsuit is the best choice for taking in maximum Vitamin D. The legs are cut high and the back is cut low for a more revealing look.

Sizes: XXS–4X

What reviewers are saying: "We all need at least one one-piece, and this is the perfect one. It holds you and snatches your body. The back is flattering as well and is far from boring."

Nova One Piece

JADE Swim regularly sells out because it's that good. The line combines clean lines with simple nostalgic silhouettes for high impact on land and sea. Bonus: For each order placed, JADE Swim plants a tree on its customer's behalf through Eden Reforestation Projects.

Sizes: XS–XL

The Veronica

Highlight your waist with this retro-style belted one-piece with bustier-inspired detailing that further enhances the sport-luxe femininity.

Sizes: XS–XXL

What reviewers are saying: "Have it in 3 colors. Beautiful shape. Flattering. Get so many compliments."

Verbena Kleio Printed One-Shoulder Swimsuit

"Boteh's Verbena swimsuit plays into the one-shoulder trend whilst featuring the brand's signature print, which makes it a great beach-to-bar one-piece," Wiggins says. To ensure support, it's designed with an internal shelf bra with removable cups and boning along the left side.

Sizes: XXS–L

Narcissus One-Shoulder Cutout Swimsuit

"Sara Christina's Narcissus swimsuit is the perfect fashion swimsuit that can easily transition into a bodysuit, particularly in this season's navy colorway," Wiggins says. "I love the strong sense of style that is completely unique on the market."

Sizes: XS–XL

The Square Swimsuit

This minimal square-neck suit featuring supportive shoulder straps can easily double as a bodysuit. It's crafted from quick-drying stretch fabric, so you can slip into linen trousers or denim shorts and feel dressed after a dip.

Sizes: 1–5

Frances Cutout Embellished Swimsuit

Leave it to Cult Gaia to convince us we need a gold-tone floral-embellished one-piece. The cutout design, while playful, remains elevated with clean lines at play.

Sizes: XS–XL

Lumière Swimsuit

Oséree's glittery one-piece, made in Italy from green stretchy nylon for minimal coverage, makes for a great addition to your swimwear collection. It offers just enough glam without going overboard.

Sizes: S–XL

Printed Clip Tank Swimsuit

This one-piece's vivid print and clean lines, including secure clip straps and a light scoop neckline, appeal to minimalists and maximalists alike. The fit and fabric make it even better—it's built with an inner shelf bra from world-renown Italian Sensitive Fabrics by Eurojersey featuring four-way stretch and SPF 50 sun protection.

Sizes: XS–XL

What reviewers are saying: "A gorgeous piece to own! Absolutely love love love this one-piece swimsuit! [...] This swimsuit is chic and classic, and it makes me feel like a million bucks!!!"

Jacquard-Trimmed Swimsuit

Sometimes it just comes down to three words: Versace, Versace, Versace. Okay, and an excellent fit, which this black one-piece offers courtesy of the smoothing stretch fabric.

Sizes: 1–5

Nicole One-Piece

You love A.L.C.'s romantic dresses and modern knitwear. Now it's time to get the label's recently launched ethical swim assortment on your radar. Each style, including this minimalist square-neck cutout one-piece, is crafted from a recycled blend of nylon and Repreve, a yarn generated from reclaimed ocean plastics.

Sizes: XS–XL

Malta One Piece Swimsuit

Mikoh basically started the cheeky swimwear revolution. This one-piece is minimal and ultra-versatile, featuring a straight neckline and high leg you can rock solo on a surfboard and later with a slip skirt for beachside cocktails.

Sizes: XS–XL

Tulipa Floral Print One-Piece Swimsuit

For a sweet swim moment, try mixed floral prints that are confidently feminine. This beautiful design is a true art piece featuring intricate illustrations made by Colombia-based female artisans.

Sizes: XS–XL

What reviewers are saying: "I only wear one piece bathing suits. I wanted something fun this time. After reading the first review and how much she loved it, I decided to get this too. I got my regular size small. It’s very beautiful. The strap in the back can be adjusted. It’s super sexy and the colors are stunning. There’s a little beading blended in at the top. This is revealing too. Sides and front. I feel glamorous when I wear this!!!!!"

Monogram One-Piece Swimsuit

Totême's logo has become iconic to a certain minimal-loving Insta girl. Join the movement with this graphic maillot. It's made from recycled fabric with four way-stretch and shaped to a classic silhouette with a deep U-back and high-cut legs.

Sizes: XS–L

The K.M. Tie One-Piece

How pretty is this mint green hue? A tie-waist enhances the sweet, powdery shade for a minimal yet feminine look.

Sizes: XS–XL

Tiggy Paisley Halterneck Swimsuit

Sometimes you want the opposite of a minimal swimsuit. Go for color and print at once in Zimmermann's halter bandeau one-piece, with gathered detailing to flatter your silhouette.

Sizes: 4–12

The Perfect Wrap One-Piece

As one of Summersalt's best-selling swimsuits, this graphic wrap swimsuit features a plunging V-neckline and open back. But don't let the skin-baring silhouette fool you. It's super supportive, featuring built-in cups, wide straps, and peek-of-cheek coverage. Try this mixed print from a limited-edition collab with Diane von Furstenberg, or go for a chicly minimal black-and-white version—the choice is yours.

Sizes: 2–22

What reviewers are saying: "I continue to be impressed with the quality of the Summersalt suits. This one is no exception. The two-tone and the tie at the waist is incredibly flattering. It highlights my shape, and the colors are timeless."

How should you pick a one-piece swimsuit?

Think of fit first. While aesthetics are significant, fit is of the utmost importance when shopping for the best one-piece swimsuit. "The fit is really the key element that can make or break a one-piece swimsuit," Wiggins of MatchesFashion explains. "It can help enhance confidence, as well as provide an element of comfort."

Consider the neckline. There are certain details that prove key when picking the best one-piece silhouette for you. The best swimsuits for small busts will offer unique necklines or embellishments to enhance volume, while the best swimsuits for big busts come with extra supportive fits and broader straps."The classic square neck is still one of the best-selling shapes and the most universally flattering," Wiggins of MatchesFashion shares. "Most recently, we have also noticed a rise in demand for one-shoulder styles, which are easy to dress up for a beach-to-bar look."

How can you style a one-piece swimsuit into an outfit?

Think about how your one-piece swimsuit will look near the water and as part of a seaside ensemble and choose accordingly. For a cover-up outfit, "I love sarongs, as they are a really easy way to dress up a swimsuit," Wiggins says. "We are seeing an interesting development in that category from brands such as Sara Cristina, who views sarongs as versatile ready-to-wear items rather than just a beach accessory. I would pair something like Louisa Ballou's Carve cutout swimsuit with a pair of relaxed trousers or a more theatrical style, such as Maygel Coronel's Santa ruffled swimsuit, with a skirt for an elevated poolside look."

Celebrities, per usual, offer inspiring styling ideas too. Mainly, they wear their one-pieces like a bodysuit, tucked beneath trousers, shorts, or a maxi skirt. "A few notable names that come to mind are Rosie Huntington-Whiteley and TyLynn Nguyen, who really portray that timeless minimalist aesthetic in swim, but it's also been interesting to see a new generation of talent, such as Dua Lipa and Sarah Lysander, style one-piece swimwear beyond the beach."

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For more than 150 years, Harper’s BAZAAR has been the preeminent fashion, beauty, and lifestyle resource for women at every age. We cover what’s new and what’s next in fashion by working with the world’s leading authorities in ready-to-wear, footwear, accessories, and more. Every story we publish has been thoroughly researched and vetted by our team of fashion editors and industry experts.

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