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Three models in black, plum, and blue bikinis by the sea; headline reads Most flattering bikinis that fit like underwear

July 22, 2026

The Most Flattering Bikinis That Fit Like Underwear™

Finding a comfortable and flattering bikini shouldn't mean choosing between comfort and style. onewith has it all with our dig-free, raw-cut swimsuits that fit like your fave no-show undies. And to make shopping even easier, we've curated our most-loved bikini combinations into pre-styled bikini sets. We paired our best-selling tops and bottoms so you can skip the guesswork and shop customer-favorite combinations with confidence.

The best part? Every bikini top and bottom is still sold separately, so you can mix and match both styles and sizes (XXS-3XL) for your perfect fit.

Whether you love timeless silhouettes, cheeky bikini bottoms, or extra coverage, there's a set that's ready to become your new favorite.

1. The Wavecrest Set (Westerly + Jennings)

If you're shopping onewith for the first time, this is the set to start with.

The Wavecrest Set combines our two best-selling styles: the Westerly Tie-Front Bikini Top and the Jennings V-Cut High-Waisted Bikini Bottom. Together, they create one of our most flattering, confidence-boosting bikinis.

The Westerly features an adjustable tie-front that lets you customize your lift while maintaining our signature second-skin fit. Paired with Jennings' flattering V-front, V-back, high-cut leg, and high-waisted silhouette, this set doesn't dig or squeeze. 

Since these are our two most popular styles, Wavecrest is also available in the widest variety of colors we offer.

Best for:

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2. The Windward Set (Westerly + Merritt)

Looking for something a little cheekier?

The Windward Set pairs the customer-favorite Westerly top with the effortlessly flattering Merritt Dipped Cheeky Bikini Bottom.

Merritt is slightly cheekier than our best-selling Woodmont bottom, offering less structure and a more relaxed fit that customers love. It feels super easy to wear while still giving you that signature dig-free, elastic-free swimsuit comfort.

Together, Westerly and Merritt create an easygoing bikini that's perfect for beach days, vacations, and soaking up the sun.

Best for:

  • Cheekier bikini bottom lovers
  • Everyday beach wear
  • Customers who prioritize comfort
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3. The Westport Set (Westerly + Compo)

Want more coverage without sacrificing style?

The Westport Set combines our best-selling Westerly Tie-Front Bikini Top with the Compo Hipster Bikini Bottom, our fullest-coverage bottom.

Inspired by the comfort of your favorite hipster underwear, Compo offers generous bum and hip coverage while maintaining our signature edgeless bathing suit construction. No bulky seams. No tight elastics. Just smooth, secure comfort.

If you've struggled to find a full-coverage bikini that still feels modern and flattering, Westport is an excellent choice.

Best for:

  • Full coverage bikini bottom
  • Everyday comfort
  • Moms
  • Active beach days
  • Anyone wanting extra confidence
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4. The Fayerweather Set (Foxon + Merritt)

For those who love versatility, meet the Fayerweather Set.

The Foxon Multi-Way Bandeau Bikini Top can be tied 5 different ways, making it easy to switch up your look throughout the season. Wear it strapless, halter, or with different tie variations while still enjoying our signature second-skin swim fit.

Paired with the cheeky Merritt bottom, this combination creates a modern, playful bikini that's perfect for tanning and vacation photo ops.

Best for:

  • Bandeau lovers
  • Multiple styling options
  • Minimal tan lines
  • Fashion-forward swimwear
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5. The Kentpoint Set (Kittery + Merritt)

Sometimes the classics really are the best.

The Kentpoint Set pairs our Kittery Classic Triangle Bikini Top with the Merritt bottom for a timeless bikini look, reimagined with onewith's patented beyond seamless swimsuit fit.

Unlike traditional triangle bikinis that can dig into your neck or back, Kittery features adjustable neck and back ties combined with our signature edgeless construction and flexible inner grip strip for all-day comfort.

Combined with Merritt's effortless cheeky fit, this set is perfect for anyone who loves classic swimwear with a major comfort upgrade.

Best for:

  • Triangle bikini lovers
  • Minimalist style
  • Vacation packing
  • Adjustable fits
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6. The Morningside Set (Melba + Merritt)

Meet the newest addition to the family.

The Morningside Set features our Melba Knot Front Adjustable Back Bikini Top, the sister style to Westerly.

Melba keeps the flattering front detail customers already love while adding an adjustable multi-way back that lets you customize both your fit and support. Wear the straps straight for a sleek look or cross them for additional lift.

Paired with the easygoing Merritt bottom, Morningside delivers customizable comfort without sacrificing style.

Best for:

  • Adjustable support
  • Customizable fit
  • Medium coverage
  • Everyday swimming
seamless bikini top, seamless swimwear one piece, best bikini bottoms, seamless swimsuit

Frequently Asked Questions

What makes onewith bikinis fit like underwear™?

Every onewith swimsuit is made using our patented better-than-seamless swimsuit construction, eliminating bulky elastic in favor of a smooth, second-skin fit that lays flat on your body without digging in.

Are the bikini sets sold together?

Our curated bikini sets make shopping easier by pairing customer-favorite tops and bottoms, but every bikini top and bikini bottom that fits like undies is still sold separately. This allows you to choose different sizes for your top and bottom while still enjoying our recommended style pairings.

Can I mix and match sizes?

Absolutely. Every bikini top and bottom is available individually in sizes XXS–3XL, making it easy to find your ideal fit.

Which bikini set is best for first-time shoppers?

The Wavecrest Set is our most popular recommendation. It pairs our best-selling Westerly Tie-Front Bikini Top with our best-selling Jennings V-Cut High-Waisted Bikini Bottom, making it the perfect introduction to bikinis that fit like underwear™.

Discover Your New Favorite Bikini

The best bikini isn't just the one that looks good... It's the one you never want to take off. Our curated bikini sets make finding your perfect swim that fits like undies match easier than ever, while still giving you the flexibility to mix and match sizes and styles. When your bikini doesn't dig in, pinch, or hold you back, confidence comes naturally.

Ready to ditch traditional swim and go edgeless? Shop onewith here. Plus, you can see our bikinis that fit like undies styles IRL over on our IG

Ready to get cheeky? 

Shop all

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