Returns & exchanges free for 60 days for all U.S. orders. Please try on the bra to ensure a good fit, making sure to leave the original tags attached. We only accept underwear in unworn condition, with original tags, in its unopened original polybag. Items marked final sale are not eligible for return or exchange. If something’s not right, we can help. Our Fit Experts are available via live chat, or email to answer any questions you might have.
Read moreIntroducing ThirdLove Swim! Finally Comfortable Swimwear For Every Bra Size (Even ½ Cup Sizes)

The Bra Experts are here to make a splash. Swimwear for every bra size is officially here and ready to keep you comfy and supported in and out of the water.
Importance of Inclusivity & Sizing in Swimwear
At ThirdLove, inclusive sizing is our bread and butter. When we decided to dive into swimwear (pun intended), we wanted to address the main issues we had with swimsuits currently on the market.
When it came to swimwear, it felt like you always had to choose between a bikini that looked great or felt comfortable. We saw that body type heavily impacted swimwear options, and we were sick of it. Let’s face it, bikini season doesn’t always feel liberating, so that’s why we set out to make inclusive swimwear that looks beautiful on everyone.
Everyone’s body is a bikini body in our eyes.
ThirdLove Swimwear for Every Breast Size
The key to a great bikini is the fit, and with that in mind, we asked ourselves – “What fits better than your favorite everyday bra?”
When developing swim, we took our love for the 24/7® Classic T-Shirt Bra and turned it into your new favorite bikini top. Plus, it pairs perfectly with our bum-approved bikini bottoms for the most flattering beach ‘fit.
Underwired Demi Swim Top
Bra-sized swim is not the norm – especially in half cups – but we’re ready to say so-long to lettered sizing (XS-XL). Especially when it comes to swimwear for big boobs, finding a bikini top that fits and flatters every curve makes all the difference.
Our limited-edition Underwired Demi Swim Top is the only bra-sized swim top made in half-cup sizes and features the same fit, coverage & support as an everyday bra.
More details:
- Built-in foam cups for shape & nipple coverage
- Poke-free, flexible underwire
- Sleek, bonded (anti-chafe) adjustable back closure
- Breathable UPF 50+ fabric
- Converts to x-back for style or slip-proof support
Swim Bottoms
It’s no surprise that the Bra Experts did justice to the bikini top, but don’t start thinking you can sleep on our bikini bottoms. We designed two styles based on coverage preference, without skipping out on comfort and style - a classic bikini style bottom and a high rise swim bottom.
These are the perfect bottoms to pair with your Demi Bikini Top. Whether you’re looking for the classic cut or a little more tush and tummy coverage, our stay-put design goes everywhere your undies can’t – like the hot tub, the pool, and the ocean.
More details:
- Smooth, breathable UPF 50+ fabric
- Shape-enhancing, no-dig waistband
- Fully lined