25 Vacation-Worthy Swimsuits for Small Busts (2024)

Anyone with a small bust needs at least one triangle top in their bikini collection. They’re easily adjustable and come in a range of colors, patterns, and coverage levels. According to Carl Cunow, designer and co-founder at Onia, the brand’s version “features a fixed triangle-style top that offers flattering coverage for the smaller bust, as well as a low-cut neckline that offers a boost, unlike scoop necks or bandeau styles.”

Complete the set: Matching bottoms $95 at Onia

Sizes: XS–XL

What reviewers say: “This top is great! It fits perfectly & is super adjustable. The print is so cute and fun, too! Highly recommend.”

You’ll never have to worry about a Tropic of C bikini falling out of style (or yourself falling out of it). Model Candice Swanepoel’s swimwear label is all about essential colors, cuts, and eco-friendly fabrics meant for wearing on vacation for years.

Complete the set: Matching bottoms $85 at Revolve

Sizes: XS—L

Whether you’re swimming laps or wading into the shallow end, you’ll want a square-neck suit like Andie’s best-selling one-piece for more-active days. Pair with a high-waisted bottom for more coverage.

Complete the set: Matching bottoms $52 at Andie Swim

Sizes: XS–XXXL

What reviewers say: “Love the square neckline. It’s great for eliminating odd tan lines. Great support and stays in place when swimming and jumping in the water.”

Stylest is a low-key vacation wardrobe revolution. This suit has chest support and all-over shaping—but it doesn’t look anything like typical shapewear. In sum? It’s a suit that feels and looks amazing.

Sizes: XS–2X

What reviewers say: “Dream come true! The suit pulls everything in while still being comfortable. The square-front style is elegant and sexy. I absolutely love the color—so vibrant. Couldn’t be happier!”

Square-neck tops may be suited for small busts, but they’re not all technical fabrics and solid colors. Case in point: the fun ties and modern botanicals on Agua by Agua Bendita’s latest bikinis.

Complete the set: Matching bottoms $380 at Moda Operandi

Sizes: XS–XL

Plunge swimsuits have the same level of support as triangle bikinis—just with a little more skin showing. The space between cups makes them particularly suited to shoppers with wide-set breasts. This black Lively plunge bikini is a forever take on the silhouette: minimal and refined.

Sizes: XS–XL

What reviewers say: “This is super cute and I was honestly blown away by the amazing support. I was able to jump and run around and everything stayed in place! Extremely comfortable, I felt like just wearing it as a bra all day! I am so happy with this purchase and can't wait to wear it this summer. Really glad I found a good quality swim top that is also adorable!”

Of the top three styles in Cuup’s swimwear line, the Plunge is a great choice for small busts. The reasons? As the brand told us: “It is minimal. It’s designed without excess bulk, includes a lighter lining fabric and underwire support, and has a plunging deep V that celebrates a beautiful neckline and natural shaping.”

Sizes: 30–42 band, A–H cup

What reviewers say: “I am in love with this suit. The color is stunning and makes me feel like a sun-kissed goddess. The fabric is buttery soft and dries quickly. The cut is divine, crazy flattering and provides for minimal tan lines. I purchased the set in the same size as I am for my bras and underwear from Cuup and the swimwear definitely fits tighter but is still flattering.”

Summersalt’s plunge one-pieces are made with a luxurious compression fabric, so you won’t sacrifice a no-slip fit for a gorgeous neckline. In addition to straight sizes, there are also extended torso options for taller shoppers with small busts. But the thing that keeps other shoppers coming back for this bestseller are the 17 combinations of prints and solids with a wrap-dress effect.

Sizes: 2–22

What reviewers say: “This is probably the best bathing suit I’ve ever owned. The quality is superior to many other bathing suits. The fit is extremely flattering as well. I feel very confident wearing it.If you’re between sizes, like I am, I would size up. I ordered the size 2 and 4 and the smaller one would’ve worked but the 4 was just a little more comforRead more about review stating High quality, good fit.table.”

Lean all the way into an island state of mind with a ring-detailed set like Solid & Stripe’s. The triangle halter provides minimal coverage, for a barely-there look.

Complete the set: Matching bottoms $108 at Solid & Striped

Sizes: XS–XL

No matter your bust size, scoop-neck swimsuits are universally comfortable (and supportive) options—minus the padding or boning other silhouettes require. This low-coverage scoop neck is easy on, easy off, with fabric resistant to fading or snags. (Editor’s note: I’ve had a version of this suit for three years, and it still looks and feels brand new.) Left on Friday also has tall sizes for sunbathers who need a little extra length in the torso.

Sizes: XS–XXL

What reviewers say: “This swimsuit is adorable. I love the cutout under the chest because it adds detail and support for my chest. The bottoms are a little cheeky, but not to the point of discomfort, and very flattering. The material feels like it is holding me in, but it’s not restricting.”

Here’s a bikini set for small busts with a hint of vintage glamour, available in several shades of glittery Lurex fabric. Not only does Oséree’s fabric shimmer more than any other bikini on the market, it also expertly balances stretch and structure.

Sizes: S–XL

The smocked fabric on this Hunza G swimsuit brings a hint of texture. With a square neck and a high-cut leg, the suit has a retro feel that brings us back.

Sizes: One size

“It’s an Alaïa!” now applies to your swimsuits. Of the designer’s expansion to swimwear, no style is better for small busts than its bandeau bikinis. This cutout style will sit comfortably on your chest without digging or pinching.

Sizes: 34–44 FR

A smaller cup with thin straps is a go-to for smaller busts. This bright pink will turn heads at the beach, but you can also choose from more demure colors. The raw edge scallop trim brings a flirty feel to the style, too.

Complete the set: Matching bottoms $159 at Marysia

Sizes: XXS–XXL

Eres has been in the swimwear game for more than 40 years, so you know its swimsuits come with fit expertise. Many of the brand’s suits are made with a smoothing house fabric known as peau douce, including this bandeau one-piece. As for the bust, the U-ring accent and hidden boning will save you from any slippage.

Sizes: 38–46 FR

Want a little more support from your swimsuit? Underwire designs are your best bet. Anemos’s lingerie-inspired balconette tops are a great place to start. They sit straight across your chest for the lightest lift.

Sizes: XS–XL

What makes Triangl so great? While the bikinis come as a set, you can actually choose your top and bottom sizes separately, as well as the cut of the bottom. Top sizes start as small as XXS and even have S+ and S++ options (for small underbusts and bigger cups).

Sizes: XXS–XL

The classic halterneck and padded cups bring support to this style, while the knotted gold hardware gives a hint of glamour. Contrasting against the black, it’s an elegant accent.

Complete the set: Matching bottoms $106 at Revolve

Sizes: S–L

Gooseberry’s shaping and sculpting one-piece is aptly named, hugging the figure without being too constrictive. With 13 colors to choose from, you can find the hue that best suits you.

Sizes: XS–XL

What reviewers say: “The material of this one-piece is amazing. It is a very stretchy material that is comfy but also cinches you in at the waist. It is a strong fabric but very light. I will be wearing it all summer and on any trips I take.”

For Love & Lemons might be known for its delicate lingerie and flirty dresses, but its swimwear is not to be missed. Crisscrossing front ties are eye-catching, and the color-blocked halter draws interest to the top.

Complete the set: Matching bottoms $34.99 at For Love & Lemons

Sizes: XXS–XL