The 19 best one-piece swimsuits of 2023

Supportive, flattering, comfortable– what's not to love? The Andie Tulum One-Piece takes top spot for the best one-piece overall. With compressive fabric, removable cups, cross straps for support, and the coverage of your choice (cheeky, medium, full), this suit makes it easy to find the right fit for you. 

Read our full review of Andie to see their other swim options and how they look on different body types.

If support is your #1 concern when looking for a one-piece, look no further than Helen Jon. Most brands use fit models (models with the perfect proportions for any given size) to make sure their styles fit well. They work with one fit model in a median size of their range and then scale their patterns up and down to accommodate smaller and larger sizes, but Helen Jon realized this method was flawed. It doesn't take into account any variety in body type, shape, and age. That's why Helen Jon uses real people, like their employees, as fit models instead. Each piece is fit on at least seven different bodies to ensure it fits a myriad of body types and fits them well. 

This suit is fully lined and reinforced with an underbust seam. It also features a v-neck and shirring detail around the torso for a super flattering fit. While there are a few suits with underbust seams on this list, Helen Jon offers the most supportive fit for most body types and busts.

Read our full review of Helen Jon to see what we loved when we tested the suits.  

Everlane is one of our go-tos for great basics, and swimsuits are no exception. This is one of the best one-pieces because cut is classic and flattering, with a square neckline, low back, and wide straps. We love the range of earthy neutrals and the quick-drying fabric is an added bonus. Everlane also ditched the traditional fit model and tested this suit on 112 women instead. The result? A suit that feels equally comfortable and flattering on a wide variety of body types. 

In our full review of Everlane's swim collection, we get into our favorite styles. 

Norma Kamali is one of my favorite designers right now; her pieces are always beyond flattering, comfortable, high-quality and stylish, and this suit is no exception. The plunging neckline, underwire cups, and halter straps that are equal parts supportive and sexy make this the best one-piece halter swimsuit around. 

This Madewell number hits the mark on support, shape, and style thanks to removable foam cups, underwire at the bust, and a sweeter-than-pie picnic check pattern. We also love that it's made with recycled nylon that would otherwise have gone to landfills.

For the brave among us, there are bandeau one-pieces. They may not be the most practical for water activities that require a lot of movement (diving, surfing, you get the gist), but they are so chic and cute. This one from J.Crew comes in over 10 colors, a wide range of sizes (0 to 24), and has classic and long-torso fit options. 

Claiming the title of the best one-piece is a tall order, but, as the name suggests, this one from Summersalt is getting pretty close. The wrap style is universally flattering, it's supportive, comfortable, and the compressive fabric keeps everything in place so you can enjoy the beach without having a fashion emergency. We love the variety of colors and patterns too.

Read our full review of Summersalt to see our favorite pieces. 

Left on Friday's swimsuits are made to keep up with you wherever your beach day takes you, whether that's lounging on the sand or swimming laps. This classic silhouette boasts soft, compressive, flattering fabric and a cute cutout detail under the chest so you can show a bit more skin without wearing a bikini. 

Channel your inner 1950's pin-up girl with this retro belted one-piece. It offers moderate coverage, adjustable straps, and the belt can be removed so you can wear this as a plain old one-piece when you feel like it too.

The Mykonos One-Piece from Andie is proof that you don't have to show a lot of skin to feel sexy. The suit is simple and elegant, with a full bottom, medium cut leg, and a deep plunging v-neck. With sizes XS-XXXL and a classic or long torso fit, Andie makes it easy to find the best fit for your body type.

As an activewear company, Athleta makes some of the best one-pieces for movement. Made with a stretchy, durable spandex that's also sun protective (it's rated UPF50+!) this suit is a no-brainer for enjoying your favorite water sports. 

Summersalt has made it on this list a few times because they are just that good. The brand always delivers on quality, fit, comfort, style, and fair prices, and for that we're huge fans. This floral suit, made in collaboration with Rifle Paper Co., is simply dreamy. The deep plunge, open back, and tie straps compliment the flirty floral patterns so well. 

When it comes to cute swimwear that doesn't break the bank, Aerie is one of our tried and trues. From trendy styles to timeless ones, the brand always has a wide variety to choose from. The textured crinkle material brings a fresh touch to this simple scoop-neck silhouette. Plus, Aerie is always running sales so you can likely snag this suit for under $50.

If you're looking for one suit to splurge on this season, Hunza G is worth checking out I tried a cheaper alternative, but was not impressed so I ultimately decided to give the brand a try and quickly found out it's worth the hype. While I was skeptic of the "one-size fits most" method, my Hunza G suits fit like a glove. The fabric is super stretchy and buttery soft, it expands and contracts to perfectly fit anyone who tries it on. The scoop back, signature crinkle textured fabric, and bright bubblegum pink color make this suit one that's sure to stand out. 

Eloquii is a destination dedicated to serving sizes 14-28, making it a go-to for plus-size swimwear shopping. This suit, made in collaboration with creative director and content creator Gabi Fresh, looks like a piece of art. The color is gorgeous, the material is soft and stretchy, and the design is laden with thoughtful details that will have you looking and feeling your best. 

For a sporty, supportive option, the Malibu is one of the best one-piece options. With compressive fabric, a snap-front high neckline (which you can unbutton if you want to show a little more skin), removable soft cups, and an under bust elastic for a lift, this suit gives you maximum bust support that can handle even your toughest water workouts.

Abysse is all about empowering women with swimwear that looks, feels, and functions great. The Gail Suit delivers on all fronts, and then some. The one shoulder and blue-checkered pattern are so fun. It's double-lined, UV protective, made with recycled nylon, and is Global Recycled Standard and Control Union certified to boot.

This slinky one-piece is perfect for busts of all sizes, including those in the IBTC. It's fully lined but is free of pads and underwire. The peach perfect fabric is so stretchy and soft, it feels like second skin.

For moms-to-be, the best one-piece must be exceedingly comfortable. Hatch's maternity wares are thoughtfully designed to keep pregnant people feeling their best with clothing that feels good for their changing bodies. Not only is this one-piece stylish, but it features a shelf bra, adjustable and convertible straps, and gathering at the side seams for added stretch.