Put Your Best Boobs Forward This Summer with These Underwire Swimsuits

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Anyone with boobs knows the importance of good support—and sometimes, those wire-free tops just don't cut it. If you put on wireless bras and immediately think, "Uh, nope," then you juuuust might need an underwire swimsuit this summer (because, yes, they are v much a thing). Like your fave underwire bra, the best underwire one-pieces and bikinis can help give you a lil extra shape, coverage, and support, whether you've got golden globes or itty-bitty bb's. Best of all, underwire swimsuits come in all sorts of silhouettes and styles, so you can decide how much coverage you'd like.

When it comes to swimsuits for big busts, underwire styles are always a good idea, especially if you're trying to avoid a nip slip this summer (IYKYK). However! Even if you're not rocking a D+ cup chest, you'll find underwire bathing suits for small busts that provide a subtle little lift, which is never a bad thing, IMO. No matter your budget, breast size, or preferred coverage, we've got comfy underwire swimwear for everyone, and you can take a sneak peek below.

Ahead, all of the best underwire swimsuits to shop this season (and for more options, be sure to check out our fave high-waisted bikinis and maternity swimsuits.

Underwire Top & High Waist swimsuit Set

A two-piece underwire swimsuit for $35?? Hi, yes, it exists (and it's got hundreds of five-star reviews, too). This triangle-style swimsuit top features adjustable spaghetti straps, G-hook closure, and underwire cups with removable pads, and it comes with matching lettuce-edge high-waisted bottoms—all for a v reasonable price, too.

• Material: 82% polyester, 18% spandex

• Sizes: 30-38, A-C

• Colors: 10 options

THE REVIEW: "My sister and I both ordered this suit and are obsessed," writes one tester. "The print is beautiful and it fits very flattering on both of us. She has boobs, I don’t. I’m built lean and slim. She has curves. Yet it looks good on both of us!"

Island Goddess Underwire Lace Up One Piece

Yep, you can get a one-piece that's both hot and supportive, and this bestselling suit is proof. The lace-up detail and the double crisscross back straps (which are fully adjustable, btw) let ya show off plenty of skin, while the allover shirring and underwire support—complete with removable cups—give this bb some structure.

• Material: 83% nylon, 17% elastane

• Sizes: 32-40, A-D

• Colors: 9 options

THE REVIEW: "This made me feel very hot and sucked in, and [it] hid areas I don’t like," one review reads. "It also could accommodate my huge boobs. Very high quality material and gorgeous material."

Tie-Strap Underwire swimsuit Top

Abercrombie never misses when it comes to supportive swimwear, and this bb is no exception. Made with ribbed, smocked, or textured scrunch fabric, depending on the color, testers <3 this one for its unlined cups, adjustable G-hook closure, and cute tie straps (and ftr, it's also available in Curve Love sizes with slightly thicker straps for those who wear a D-F cup).

• Material: 86% nylon, 14% elastane (ribbed); 88% nylon, 12% elastane (smocked); 83% polyester, 11% nylon, 6% elastane (scrunch)

• Sizes: 28-42, A-F

• Colors: 9 options

THE REVIEW: "THIS TOP IS SO CUTE!!!!!" raves one buyer. "It's the right amount of coverage without being too modest. It's got great support (especially on the sides, underneath the arm), and the straps are adjustable and don't feel too thin."

Smoothies Solo swimsuit Top

A great choice for folks with larger busts: this underwire swimsuit top from Body Glove, which features power mesh, removable cups, and adjustable two-way back straps to keep your girls in place (and, yep, the matching bottoms are just as supportive). It comes in a variety of color options, and don't be surprised if you're tempted to snag 'em all.

• Material: 80% nylon, 20% spandex

• Sizes: D-F

• Colors: Kingfisher, Akebi, Black, Cactus, Sea Mist, True, Snow, or Coastal

THE REVIEW: As one tester writes, "This is definitely my favorite swim top! It's hard to find tops that are flattering, supportive, AND comfortable when you have a large chest. The best part is it's not a halter, so there's no strain on your neck. I wore this on a cruise and road the Flowrider, and it stayed on!!!! "

Camari Top

Don't like the look of a classic underwire swimsuit top? This one's for you, bb. Made with larger chests in mind, this sporty top boasts a criss-cross tie-back, removable chest pads, and hidden underwire for next-level support. Pair it with the crossover Mae Bottom to complete the ~lewk.~

• Material: 82% recycled polyester, 18% spandex

• Sizes: 32-38, C-DD

• Colors: Cilantro, Navy, Black, Azul, Lilac, Taj, or Zinnia

THE REVIEW: "Super cute and strappy top with lots of support for bigger-busted ladies," one review reads. "I was really impressed with how supportive it was, and the underwire [is] well hidden. Excited to wear on vacation this spring!"

Demi Cup swimsuit Top

You already know ThirdLove is the place to go for ultra-supportive bras—but did you know the company makes underwire swimwear as well? Available in an impressive range of sizes (including half cups!!), this swimsuit version of the internet-famous 24/7 T-Shirt Bra has got built-in foam cups, an adjustable G-hook closure, and convertible straps—and you can pair it with just about any bottoms.

• Material: 74% nylon, 26% lycra

• Sizes: 32-44, A-H

• Color: Black

THE REVIEW: According to one review, "This is the first time that I’ve had a properly fitting swimsuit top. My 34F ladies fight gravity, and I have never fit in a swimsuit top THIS WELL. I am absolutely in love, and there’s even padding that WORKS…It’s actually a nice little cushion that doesn’t float around inside the cup, and it keeps your nips in check."

Always Fits Demi swimsuit Top

Not looking for *too* much coverage? Feast your eyes on this demi-cup underwire swimsuit top, which is made with compressive crinkle fabric that stretches with your body and is lined for extra support. Other perks include the adjustable shoulder straps, comfy G-hook closure, and fun leopard print (though it also comes in white if you're not into prints).

• Material: 94% polyester, 6% spandex

• Sizes: 28-48, A-DD

• Colors: Glass or lollipop

THE REVIEW: "Love it!!" one tester writes. "The fabric is stunning and the fit is just perfect...[It] really flatters my body! I need this in more colors!"

Square Neck V Bra Cup Tankini

Calling it now: This is going to be the summer of the tankini. Featuring a square neck with a cute lil V cutout and extra-thick straps (which are both adjustable and convertible), this sporty number is ideal for anyone who wants the lift and support of their favorite bra—thanks to the hidden underwire and removable cups—along with stretchy midriff coverage.

• Material: 75% recycled nylon, 25% lycra

• Sizes: 32-40, B-DD

• Colors: Deep Fern, Electric Fuchsia, Dark Lapis Blue, or Black

THE REVIEW: "Perfect fit! This tankini delivers," one tester writes. "It's supportive to those girls who are bigger-chested, and [it's] flattering! I bought a 36DD, and this top fit like a glove. I couldn't have found a better swimming top if I tried."

Twist-Front One-Piece Swimsuit

From the twist and cutout front accents to the hot open back (complete with a G-hook closure), this Victoria's Secret one-piece is such a stunner—plus, it's got adjustable straps and removable push-up padding so you decide how much oomph you wanna deliver.

• Material: 74% polyamide, 26% elastane (fishnet), 80% polyamide, 20% elastane (smooth)

• Sizes: 30-42, A-D

• Colors: Shocking Blue, Forever Pink, Black, or Black Tropical

THE REVIEW: "This swimsuit fit like a glove," notes one reviewer. "Material is forgiving and so comfortable."

Heart Top

Underwire swimsuits aren't just for those with bigger busts, and this truly magic suit is proof. The secret: It uses mono-underwire and side paneling to push your girls up and together, creating ah-making cleavage for even the itty bittiest of titties. Sorcery! It's also got a G-hook back, halter tie, and adjustable straps, and you can pair it with the strappy Desire Bottom.

• Material: 85% polyester, 15% elastic

• Sizes: 32-36, A-D

• Colors: Olive, Magenta, Cobalt, or Black

THE REVIEW: As one review reads, "I absolutely love this top!!! The boobs are boobing and I’m obsessed."

Dainty swimsuit Top

For a swimsuit top that feels as comfortable as a bralette (but offers way more shape), go with this buttery-soft ribbed suit from Montce. With its princess darts and scoop neckline, this one will make you forget you're even wearing underwire (though you'll still feel well supported, thanks to the adjustable back closure and shoulder straps). Not into ribbed fabric? Fret not—it comes in TONS of other materials.

• Material: 90% nylon, 10% spandex

• Sizes: 32-40, AA-DDD

• Colors: 30 options

THE REVIEW: "This top is so comfortable and has enough support to feel secure," one reviewer notes. "I’m a 34DD and the L fits perfectly. It is the most expensive bathing suit I own, but it’s so good that I want to try more styles."

Ava Knot One Piece

The problem with a lot of plunge one-pieces: They don't offer a ton of bust support. But that won't be an issue with this stunning suit, which features a V-neck keyhole with built-in underwire for no-show support. Testers also rave about the thick, adjustable straps, removable cups, and stretchy matte jersey fabric.

• Material: 92% nylon, 8% spandex

• Sizes: 30-40, A-DD

• Colors: Navy, Black, Fiery Red, Acai, French Blue, or White

THE REVIEW: "I have been searching for a one-piece with good support for YEARS. I’ve finally found it," reads one review. "The fit on this swimsuit is impeccable, [and] the underwire is hidden but gives the support of a bra without the look. The suit is double lined and feels great on. I love this thing."

Jewel Cove Sweetheart Padded swimsuit Top

Got big boobs? This balconette-style swimsuit has got your back (and your chest, lol). Made with seamed, foam-lined cups with side boning for shape, this big bust-friendly top is anything but matronly—plus, it's got fully adjustable stretch straps and a sturdy snap-back closure to keep everything in place.

• Material: 84% nylon, 16% elastane

• Sizes: 30-42, DD-L

• Colors: Black, Azure, Turquoise, Raspberry, Marine, or Black and White

THE REVIEW: According to one reviewer, "As someone who's a 34G, it is so hard trying to find swimsuit tops that actually fit me, and the ones that do fit me are usually pretty uncomfortable. But this...THIS is different. I don't know how these guys did it, but they made a swimsuit top for big-chested women that is comfortable, adorable, and secure."

Italian Demi swimsuit Top

Want a luxury-quality underwire swimsuit without a luxury price tag? Try this demi-style top from Quince, which is made with recycled fabric and complete with adjustable straps and a back tie for a totally customized fit. Plus, if ya hate extra padding, then you'll be happy to hear that these underwire cups come unlined without any added pads.

• Material: 78% recycled polyamide, 22% spandex

• Sizes: 32-40, A-D

• Colors: Cherry, Berry, Deep Navy, Teal, or Black

THE REVIEW: "I love this top," reads one review. "It is flattering, fits true to size, and the material and quality is unmatched."

The Scoop

It doesn't get much more supportive than this stunner from Cuup. This swimsuit features a rounded neckline and sculpted cups that seamlessly extend into extra-wide straps, which means you don't have to worry about any unexpected nip slips. And yep, both the straps and the back closure system are fully adjustable so you can find a *perfect* fit.

• Material: 78% recycled polyamide, 22% elastane

• Sizes: 30-44, A-H

• Colors: 18 options

THE REVIEW: According to one buyer, "This is the swimsuit top I've been waiting for! I've tried on so many tops and was ready to give up but I'm so glad I didn't. The Scoop fits perfectly and I feel supported and flattered. Love the adjustable band—such a thoughtful detail."

QQ: What do underwire swimsuits do?

There are lots of ways that swimsuits can offer bust support, such as with shelf bras, molded cups, removable pads, or compressive designs...but tbh, no bathing suit will give you as much support up top as an underwire swimsuit. Instead of relying on extra padding or other support mechanisms, underwire swimsuits use cups lined with plastic or metal wire, which means lifted, supported boobs for you. Goodbye, annoying boob pads that get all folded up inside your swimsuit top!!

How to choose the best underwire swimsuit

Just like when you're shopping for any type of bra, you want to think about how much support you'll need and what kind of activities you'll be doing ('cause a nip slip is a great way to spoil a day, ya know??). A few things to keep in mind as you shop:

Consider the style

Underwire bathing suits come in tons of different coverage styles, and the one you pick all depending on your bust size and comfort level. Those who don't wanna risk any spillage should probably choose a full coverage top, while those who like moderate coverage should opt for a demi-cup suit. And if you really wanna showcase some cleavage, then a balconette or plunge swimsuit is the way go.

Check out the straps

Like underwire, straps are key when it comes to support, and typically, a thicker strap means more stability and less movement (not to mention that thinner straps are far more likely to dig into your shoulders or neck). If you have a bigger bust, you probably also want to look for straps that are wide, adjustable, and—ideally—convertible, so you can customize your fit and make sure they stay firmly in place.

Find the right fit

Shopping for swimwear online can be tricky, especially when it comes to underwire suits. While browsing, consider whether you'd like a compressive or more relaxed fit, then read reviews to see if you should size up, down, or go with your regular bra size. The best swim tops and one-pieces tend to be those that are fully adjustable so you can customize your fit as needed (which is especially important if you're someone with a larger bust and smaller ribcage).

Why trust 'Cosmo'?

Cosmo's team of digital fashion experts have decades of combined experience in the industry. They spot relevant trends on the runway before they even hit your TikTok FYP or Insta Explore Page and conduct research across retailers of all kinds—testing many brands IRL—to bring you the best clothing and accessory picks for every season. Basically, we've curated the internet to bring you the chicest options like it’s our job (because it is, heh).

Each of our shopping articles adheres to the 15 Percent Pledge and includes products for all sizes. Our underwire swimsuits were chosen based on style, functionality, testability, price point, and so many reviews to put together this shoppable list of the very best for you!

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