The 25 Best Bikinis for Small Chests You Can Buy Right Now (2024)

Cleavage can be hard to come by for those with small busts, and while side boob has its time and place, why not give the under-boob look a try?

Size Range: XS-XL

Colors: Black

Material: 88% Nylon, 12% Spandex

Customer Review: “This top is amazing and fits in all the right places. I was worried that it was not gonna have much support given that there aren’t adjustable straps but it’s perfect!”

This sweetheart neckline features underwired cups, which can work wonders on a small-busted gal. It can be worn with the spaghetti straps attached or as a strapless top with the matching bottoms. Either way, can you believe this print? Obsession-worthy.

Size Range: XS-XL

Colors: Light blue

Material: 71% nylon, 29% LYCRA®

As the name suggests, you can style this one-piece swimsuit in six different ways, all of which are super sexy—and each option serves small chests in its own way. The classic plunge, for example, is universally flattering. Crossing the straps for a keyhole cutout, on the other hand, will amplify even the least bit of cleavage.

Size Range: XS-4XL

Colors: Matte black and flat white

Material: Recycled plastic water bottles

Customer Review: “I have *never* been so happy with a swimwear purchase, or felt sexier in a one piece.”

As a rule of thumb, tops that are bra-like in structure and style tend to be some of the best options for those with a small bust because they a can be fitted and uplifting. Complete the look with the brand’s Byron Bottom.

Size Range: Petite, S-L, Voluptuous, Very Voluptuous, Very Very Voluptuous

Colors: 20 options

Material: 78% Nylon, 12% Metallic, 10% Spandex

A teeny bikini top like this one, which includes double knots and a keyhole, is scorching hot. It feels supportive despite being strapless, which makes it a good investment, plain and simple—and the coordinating Alana Tie Front Cheeky Bottoms are super cute, too.

Size Range: XS-XXL

Colors: 10 options

Material: 80% Recycled Nylon, 20% Spandex

Customer Review: “I have never felt so confident and comfortable in a bikini until this set!”

The underwire in this barely-there top will give you precisely the lift you seek. Finish off your tanning look with the matching bottoms, while you’re at it.

Size Range: XS-XL

Colors: 9 options

Material: 78% Recycled Polyamide, 22% Elastane

Customer Review: “Runs small, but fits great on my lean, small-chested frame. I am 6’0”, size 4, 32B, and ordered a M in both the top and bottoms of this suit. They fit perfectly. The material is nice, color is vibrant. Will be great with a tan. Love.”

People with bigger chests who need more support from their swimwear don’t always reach for a neckline this deep, but there’s nothing stopping you from showing up to the pool in this head-turner.

Size Range: XS-XL

Colors: 14 options

Material: 84% Polyamide, 16% Elastane

Customer Review: “The most flattering ever. Who said a one-piece was boring?!”

Perfect for the fashion girl on vacation—this flirty top (that you can also wear off the shoulders) will leave you feeling confident as ever. Made from recycled Italian fabric, the front tie is your best friend here when it comes to achieving a flattering fit. And if you’re feeling cheeky, add the matching bottoms to the mix.

Size Range: XS-XXL

Colors: Coquette and noire

Material: 78% Recycled Nylon, 22% Elastane

Customer Review: “Really great fit and different from all the other offerings!”

In collaboration with Body Glove, Good American has hit the mark with fit and design with its latest timeless collection. With a zipper, you can create faux cleavage with this top by leaving it unzipped just an inch (or two). And because the material is sculpting, it’ll accentuate the girls in all the right ways. Achieve the full ’80s-inspired look with the Straight Up Bikini Bottoms.

Size Range: XS-5XL

Colors: Flamingo pink and Body glove gold

Material: 72% Nylon, 28% Spandex

This one-piece is working overtime to help you feel your best. It features a bra up top and shapewear mesh throughout the bodice to “enhance what you love and smooth what you don’t.”

Size Range: 0-20

Colors: Navy, Caviar, Latte, and Leopard

Material: 57% polyamide, 43% elastane

Customer Review: “To have shapewear and swim all in one is a total game changer!!!”

This top boasts not one but two chest-enhancing features. The fun ’90s print draws the eye while the lace-up front can be tightened to create a bit of cleavage. The fun doesn’t have to stop there; finish your look off with some high bikini bottoms for a more sophisticated feel. Or even dress it up with some wide-legged denim for a cutesy daytime look!

Size Range: S-L

Colors: Multicolor

Material: 82% Recycled Polyamide, 18% Spandex Knit

A string bikini is a classic to begin with—and it deserves a spot in any collection—but the style is especially well-suited for small cup sizes because of the ability to tighten and adjust to your specific measurements. This Amazon favorite comes in 20 different colors and patterns.

Size Range: XS-XXL

Colors: 20 options

Material: 82% nylon, 18% spandex

Customer Review: “I would definitely buy this again.”

For a more modest option, this one-piece has got you covered. All the while, the ruffle effect over the chest emphasizes what you’ve got without showing too much skin.

Size Range: 2-14

Colors: 7 options

Material: 80% Nylon, 20% Spandex

Customer Review: “I’m obsessed with this suit! I’ve never had a suit that was so soft and luxurious before, and I've tried on a lot. It slims in all the right places and is super padded and supportive of my chest so that I don’t have to worry about my nips showing.”

Ever think about making waves in a swim top? Featuring a center front keyhole with ruching, a high neckline, and durable ties, this neon number is guaranteed to give your girls that much-needed lift. And don’t forget about the matching swim sarong!

Size Range: XXS-4X

Colors: 7 options

Material: 76% Recycled Nylon, 24% Spandex

Customer Review: “The color of this top is so bright and fun. I love it! And the cut of this top is flattering and trendy. It makes me feel like such a cool girl.”

Corsets are known for doing good for small and big chests alike. That rule extends to corset-like bathing suit tops with constructive underwire and laced-back ties.

Size Range: XS-XL

Colors: 9 options

Material: 80% Nylon, 20% Spandex

Customer Review: “It’s held everything up and in. I would recommend this suit to anyone. Seriously so so so worth it trust me.”

If you didn’t know, metallics are also all the talk this summer.

Size Range: XS-L

Colors: 6 options

Material: Nylon/spandex blend

Customer Review: “This suit is the definition of ‘cool girl’. Plus, it’s very lightweight!”

Whether for beach volleyball or bodysurfing, sometimes you need a top that will stay fit just right. This will give you peace of mind—and look extra cute with the matching high-waisted bottoms.

Size Range: XS-3XL

Colors: 8 options

Material: 82% Nylon, 18% Spandex

Customer Review: “An exception to ‘bikini tops never fit me right.’ With small boobs and wide ribs, I hardly bother with two-piece suits because they’re often not so flattering. This one looks great, fits great, comfortable enough to sleep in, and I actually have cleavage (one star deducted only for seams and pads that wouldn’t lie flat at first, but probably will with use).”

Ruffles give the effect that there’s more there than there really is. Plus, the eyelet detailing is très cute.

Size Range: XS-XL

Colors: Floral daze coral orange and Berry and coral orange seersucker stripe

Material: 90% Polyamide, 10% Elastane

When in doubt, you can’t go wrong with a classic style like this ’90s-inspired underwire bikini top. And you’re in luck; this one comes in 7 color options—as do the matching bikini bottoms.

Size Range: XS-XL

Colors: 7 options

Material: 72% polyamide, 28% elastane

ELLE Editor review: As a 32A, finding a bikini top that doesn’t gap is always something on my mind when it comes to swimwear. I love that this simple style holds my chest just right and feels so classic.—Dale Arden Chong, senior fashion commerce editor

Want to tap into the crochet fashion trend this summer? Embellish what your mama gave ya with a floral embroidered triangle top.

Size Range: S-L

Colors: Multicolor and Snow White

Material: Knit blend

Customer Review: “Obsessed with this bikini! The top is a little tiny so size up if you’re not flat-chested; the quality is amazing and the fit is PERFECTION!”