The Most Supportive Underwire Swimsuits That Don’t Sacrifice Style
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Let’s face it: the hunt for swimwear that checks every box—supportive, stylish, and comfy—is not for the weak. Unless you’ve been blessed with naturally gravity-defying boobs (lucky you!), a wireless top isn’t going to cut it. But that doesn’t mean your only other option is a bulky, full-coverage suit that feels more like a bra than beachwear.
I know it sounds too good to be true, but there are underwire styles out there that comfortably lift and support in chic silhouettes you’ll actually want to wear. They exist—you just have to know where to find them. And we do! Whether you’ve got golden globes or itty bitty bs, these are the absolute best underwire swimsuits in the game.
Our top picks for the best underwire swimsuits:
The Best Crochet-Style Underwire Swimsuit
Abercrombie & Fitch Curve Love Crochet-Style Wide Strap Underwire Bikini Top
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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).
Best Deal
Pros
- Great quality for the price
- Provides nice coverage and support, per testers
Cons
- Not a good fit for larger chests
- Some found the underwire a lil uncomfy
A two-piece underwire swimsuit for $35?? Yes! (And it's got hundreds of five-star reviews, too). This triangle-style bikini top features adjustable spaghetti straps, a G-hook closure, and underwire cups with removable pads, and it comes with matching lettuce-edge high-waisted bottoms—all for a very reasonable price, too.
| Material | 82% polyester, 18% spandex |
| Sizes | 30-38, A-C |
| Colors | 10 options |
Pros
- Underwire keeps ya lifted without full coverage
- Lace-up detail is a v sexy touch
Cons
- Runs a bit small, according to reviews
- Not everyone loves the look of the ruching
Yep, you can get a one-piece that's both sexy and supportive, and this bestselling suit is proof. The lace-up detail and the double crisscross back straps (which are fully adjustable) let you show off plenty of skin, while the allover shirring and underwire support—complete with removable cups—give it some structure.
| Material | 83% nylon, 17% elastane |
| Sizes | 32-40, A-D |
| Colors | 9 options |
Abercrombie & Fitch Curve Love Crochet-Style Wide Strap Underwire Bikini Top
Abercrombie & Fitch Curve Love Crochet-Style Wide Strap Underwire Bikini Top
Pros
- Crochet fabric gives it a unique looik
- Wide, adjustable straps provide superior support
- Unlined cups are comfy
Cons
- Some wish cups came with light padding
Abercrombie never misses when it comes to supportive swimwear, and this crochet style is no exception. Despite what you might assume given the fabric, this bad boy is as practical as it gets—shoutout to the Curve Love fit (made for cups D to F) and adjustable wides for actually holding the girls upright.
| Materials | 98% Polyester, 2% Elastane, 80% Nylon, 20% Elastane8, 0% Nylon, and 20% Elastane |
| Sizes | XXS-XL |
| Colors | 10 options |
Pros
- Gives amazing shape and support, per reviews
- Straps can be worn straight or crossed
Cons
- Some wish straps were a liiiiittle thicker
- Not available in smaller bust sizes
A great choice for folks with larger busts: this underwire bikini top from Body Glove 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 them all.
| Materials | 80% nylon, 20% spandex |
| Sizes | 32-38, C-DD |
| Colors | 8 options |
Pros
- Offers high support without looking like a bra
- Testers love adjustability provided by the strappy tie back
Cons
- May not work as well for smaller busts
- Some reviewers suggest sizing up, as cups run small
Don't like the look of a classic underwire bikini top? This one's for you! 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 look.
| Material | 82% recycled polyester, 18% spandex |
| Sizes | 32-38, C-DD |
| Colors | 7 options |
Pros
- Available in half-cup sizes (which is so rare!!)
- Straps can be worn crossed for extra support
Cons
- Currently only comes in black
- May look too bra-like for some
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, this bikini 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.
| Materials | 74% nylon, 26% lycra |
| Sizes | 32-44, A-H |
| Colors | Black |
Pros
- Bralette silhouette is so chic
- Knit rib material really is buttery-soft
Cons
- Some wish straps were a tad thicker
- Demi cups may not offer as much coverage as some like
For a bikini 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 |
Pros
- Increeeedibly supportive (even for larger busts!)
- Side boning keeps you comfortably locked in
Cons
- Back closure isn't adjustable
- Looks more bra-like than some testers hoped
Got big boobs? This balconette-style bikini 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 | 6 options |
Pros
- Tie-back design gives you a better fit
- Amazing quality for a super reasonable price
Cons
- Not a great fit for larger-busts folks, per reviewers
- Some wish cups included some padding for coverage
Want a luxury-quality underwire bikini 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 you 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 | 5 options |
Pros
- Adjustable Cback closure
- Comes in a wide range of sizes
Cons
- Some testers said it runs small, so may need to size up
It doesn't get much more supportive than this stunner from Cuup. This bikini 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 | 83% Polyamide, 17% Elastane |
| Sizes | 30-44, A-H |
| Colors | 1 |
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 honestly, 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 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 has 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).
Megan Schaltegger is an NYC-based writer. She loves strong coffee, eating her way through the Manhattan food scene, and her dog, Murray. She promises not to talk about herself in third person IRL.
Corinne Sullivan is the Senior News Editor at Cosmopolitan, where she covers all things celebrity and reality TV. She can tell you everything you need to know about the love lives of A-listers, the latest Bravo drama, and where to shop like the stars. She is also the author of two novels: Yours Always and Indecent.
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