For more info, check out our size chart here.
The Westerly Tie-Front Bikini Top is one of our top-rated, beyond-seamless styles—literally. This flirty, bra-like swim top features a low scoop neckline with just the right amount of coverage, a functional tie front, and removable cups, letting you control how much lift you want.
Our patent-pending raw-cut edges, combined with the soft inner grip strip, ensure a smooth, secure fit that’s truly onewith your body—without tight elastics or bulky seams. Comfortable, flattering, and effortlessly chic.
- Garment imported from China
- Designed in USA, patent-pending
- Soft, flexible inner grip strip to keep the suit secure
- LATEX INFORMATION: we can not guarantee that the inner grip strip inside of our suits does not contain trace amounts of latex. Therefore, if you have a latex sensitivity or allergy, we recommend you exercising the same caution and sensibilities you would take in general when determining whether or not to use or wear a product that may contain latex.
- Dig-free, elastic-free, edgeless smoothing laser-cut construction, just like your fave undies
- 80% nylon 20% elastane
- Hand wash only (rinsing in the shower is just fine), lay flat to dry
Ready to find your perfect onewith fit? Just click the size quiz button on any product page, answer a few simple questions. Once completed, your best size will populate, tailored to each and every style on our site for all our products as you continue to shop. 🎉
Now, remember—everyone's unique, and preferences, along with the human body, are more dynamic than any size chart or quiz could ever capture. That being said, our sizing quiz is the next best thing to actually trying on our suits in person 😉🔍
Disclaimer: While we strive to provide the most accurate sizing guidance possible, please note that individual fit preferences and proportions may (read: WILL) vary. Buying the size that the size quiz suggests does not guarantee your fit.
If you have any further questions or concerns, our dedicated customer support team is always here to assist you (chat us, DM us, email us, etc!) and, we offer 1 free courtesy exchange on eligible orders 🩵 read our full return/exchange policy here.
SIZE | BUST | WAIST | HIPS | |
XXS | 00 | 30 -31 | 22-23 | 33-34 |
XS | 0 | 32 - 33 | 24 - 25 | 35 - 36 |
S | 2-4 | 34 - 35 | 26 - 27 | 37 - 38 |
M | 6-8 | 36 - 37 | 28 - 29 | 39 - 40 |
L | 10-12 | 38 - 39 | 30 - 31 | 41 - 42 |
XL | 14-16 | 39 - 41 | 32 - 34 | 43 - 45 |
2X | 18-20 | 42 - 44 | 35 - 37 | 46 - 49 |
3X | 22-24 | 45 - 48 | 38 - 41 | 50 - 52 |
4X | 26-28 | 49 - 52 | 42 - 45 | 53 - 55 |
Bellows One Piece Torso Measurements
SIZE | INCHES - shoulder to crotch, relaxed | |
XS | 24.25 | |
S | 25 | |
M | 26.75 | |
L | 27.25 | |
XL | 28 | |
2X | 28.75 | |
3X | 30.75 | |
4X | 31.25 |
When sized and stretched properly, onewith will NOT dig in. Remember: you're a human being, and bodies are so much more dynamic than just numbers on a size chart. DM us if you want further guidance on best size!
NOTE: Do NOT expect our suits to be IDENTICAL to no-show underwear in fit. Do note that our suits do not have the same amount of stretchiness of standard no-show panty due to the inner grip strip & bonding.
Looking for cup sizes? We don't size by cup! Go with the measurement of the fullest part of your bust, and reference the Bust section of the chart. Or, shortcut alert 📣 order the same size you would for a camisole/tight tank!
"can I just order a few sizes and styles and return what doesn't fit???"
please don't 🫠🫠🫠🫠 read about high volume returns here. (hint: we charge additional return fees for this! it's not great for our small business, the environment, and other customers ☹️)
Some IRL size reference pics for you:
Westerly Tie-Front Bikini Top
- Unit price
- /per
☝️you can also reference our size guide (including model images!) here.
🤨 need more guidance on what size to choose? chat us! our team of fit experts will help you! 💬
see it on 👀
see our size guide/take our sizing quiz for sizing tips!
80% nylon, 20% elastane
have questions? email or DM us!
FREE shipping on all US orders over $85
secure payment
Adding product to your cart
The Westerly Tie-Front Bikini Top is one of our top-rated, beyond-seamless styles—literally. This flirty, bra-like swim top features a low scoop neckline with just the right amount of coverage, a functional tie front, and removable cups, letting you control how much lift you want.
Our patent-pending raw-cut edges, combined with the soft inner grip strip, ensure a smooth, secure fit that’s truly onewith your body—without tight elastics or bulky seams. Comfortable, flattering, and effortlessly chic.
For more info, check out our size chart here.
- Garment imported from China
- Designed in USA, patent-pending
- Soft, flexible inner grip strip to keep the suit secure
- LATEX INFORMATION: we can not guarantee that the inner grip strip inside of our suits does not contain trace amounts of latex. Therefore, if you have a latex sensitivity or allergy, we recommend you exercising the same caution and sensibilities you would take in general when determining whether or not to use or wear a product that may contain latex.
- Dig-free, elastic-free, edgeless smoothing laser-cut construction, just like your fave undies
- 80% nylon 20% elastane
- Hand wash only (rinsing in the shower is just fine), lay flat to dry
Ready to find your perfect onewith fit? Just click the size quiz button on any product page, answer a few simple questions. Once completed, your best size will populate, tailored to each and every style on our site for all our products as you continue to shop. 🎉
Now, remember—everyone's unique, and preferences, along with the human body, are more dynamic than any size chart or quiz could ever capture. That being said, our sizing quiz is the next best thing to actually trying on our suits in person 😉🔍
Disclaimer: While we strive to provide the most accurate sizing guidance possible, please note that individual fit preferences and proportions may (read: WILL) vary. Buying the size that the size quiz suggests does not guarantee your fit.
If you have any further questions or concerns, our dedicated customer support team is always here to assist you (chat us, DM us, email us, etc!) and, we offer 1 free courtesy exchange on eligible orders 🩵 read our full return/exchange policy here.
SIZE | BUST | WAIST | HIPS | |
XXS | 00 | 30 -31 | 22-23 | 33-34 |
XS | 0 | 32 - 33 | 24 - 25 | 35 - 36 |
S | 2-4 | 34 - 35 | 26 - 27 | 37 - 38 |
M | 6-8 | 36 - 37 | 28 - 29 | 39 - 40 |
L | 10-12 | 38 - 39 | 30 - 31 | 41 - 42 |
XL | 14-16 | 39 - 41 | 32 - 34 | 43 - 45 |
2X | 18-20 | 42 - 44 | 35 - 37 | 46 - 49 |
3X | 22-24 | 45 - 48 | 38 - 41 | 50 - 52 |
4X | 26-28 | 49 - 52 | 42 - 45 | 53 - 55 |
Bellows One Piece Torso Measurements
SIZE | INCHES - shoulder to crotch, relaxed | |
XS | 24.25 | |
S | 25 | |
M | 26.75 | |
L | 27.25 | |
XL | 28 | |
2X | 28.75 | |
3X | 30.75 | |
4X | 31.25 |
When sized and stretched properly, onewith will NOT dig in. Remember: you're a human being, and bodies are so much more dynamic than just numbers on a size chart. DM us if you want further guidance on best size!
NOTE: Do NOT expect our suits to be IDENTICAL to no-show underwear in fit. Do note that our suits do not have the same amount of stretchiness of standard no-show panty due to the inner grip strip & bonding.
Looking for cup sizes? We don't size by cup! Go with the measurement of the fullest part of your bust, and reference the Bust section of the chart. Or, shortcut alert 📣 order the same size you would for a camisole/tight tank!
"can I just order a few sizes and styles and return what doesn't fit???"
please don't 🫠🫠🫠🫠 read about high volume returns here. (hint: we charge additional return fees for this! it's not great for our small business, the environment, and other customers ☹️)
Some IRL size reference pics for you:
- JHJennifer H.Verified BuyerWhat is your typical bra size? 38CWhat size did you purchase? XL2 weeks agoWhat is your typical bra size? 38CWhat size did you purchase? XLReviewingWesterly Tie-Front Bikini TopRated 5 out of 5 starsSo cute and flattering!
I took a shot in the dark ordering a top with my bottoms since I don’t have one similar to this style and let me tell you it’s is so cute! The only this is that the excess material when tying can awkwardly jut out too much for my preference but double knotting it looks strange but it’s something I can bare with!
Was this helpful? - LPLauren P.Verified BuyerWhat is your typical bra size? 36DWhat size did you purchase? XL2 months agoWhat is your typical bra size? 36DWhat size did you purchase? XLReviewingWesterly Tie-Front Bikini TopRated 5 out of 5 starsPerfect for the girls!!
Obsessed!!!! I’m at 36 D and loveeeee the support of this top!!! It is so sexy while at the same time being something I’d be absolutely comfortable wearing around family! I’m SO excited to wear this to the beach, pool or spa!!! 10/10, I got an XL and could likely have gone down to the L but love the extra comfort the XL gives!
Was this helpful?Oonewith1 month agoThank you so much for your incredible review, Lauren! We're thrilled to hear you're obsessed with the fit and support of your Westerly top. Finding that ideal balance of sexy and comfortable is everything, and we couldn't be happier our swimwear has provided you with both style and confidence. Enjoy rocking your new suit at the beach, pool or spa all summer long!
- SBSara B.Verified BuyerWhat is your typical bra size? 36CWhat size did you purchase? L2 months agoWhat is your typical bra size? 36CWhat size did you purchase? LReviewingWesterly Tie-Front Bikini TopRated 5 out of 5 starsVery comfortable
The top is very comfortable and flattering. I would not recommend this style if you're well endowed. I'm a 36-C & ordered a size Large & it just barely fits/provides just enough coverage for the girls.
Was this helpful?Oonewith1 month agoThank you so much for your review, Sara! We're thrilled to hear your Westerly is comfortable and flattering :) We appreciate you sharing your experience to help guide others toward a style that may provide a bit more coverage and support. Please do note, you scoop, lift, and tie to achieve the best Westerly fit. Hope this helps!
- KJKasey J.Verified BuyerWhat is your typical bra size? 38BWhat size did you purchase? L2 months agoWhat is your typical bra size? 38BWhat size did you purchase? LReviewingWesterly Tie-Front Bikini TopRated 5 out of 5 starsBest swim suit ever!!
I just want to say that I was on the hunt for a specific swimsuit that fit like seamless underwear and bras do and this company nailed it on the head! The Woodmont bottoms fit perfect and the cherry dip was so dang cute. I usually feel like hunting for swimsuits is so defeating as I’m midsized but I have never felt as confident as I do in this swimsuit. The front tie swimsuit can be tied tighter or looser in the front to create more or less cleavage.
Was this helpful?Oonewith1 month agoThank you so much for your kind review, Kasey! Sounds like you finding us was meant to be :) We're so glad you've been loving your Westerly + Woodmont. Enjoy!