Miraclesuit
Each top from this popular swim brand can be ordered in your bra size, ie. 34D or 40DD. They've got supportive bikini and tankini options in both molded soft cups and underwire. All swim styles are made in their proprietary slimming control fabric, Miratex.
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Bare Necessities
The online resource for best bras has many supportive bikini tops styles on their platform, like this Freya Beach Hut Bikini Top, which is made from a lingerie company so it fit’s like a bra in swimsuit material. It’s also sized like a bra so you’re getting a better fit. It has underwire and lined cups for shape and support. Also it offers adjustable and convertible straps which can be worn as a cross back or over the shoulder style.
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Lands' End
The Lands' End styles are not only supportive, but they're long-lasting, too. Made with LYCRA Xtra Life spandex, which lasts up to 10 times longer than suits made with regular spandex. The material is also resistant to chlorine, sunscreen and sweat.
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Garnet Hill
This Active Bikini Top has all the style of a flattering bikini top, with the soul--and support--of a sports bra, so you can confidently swim laps or chase the kids along the beach with. no problem. Made with their super soft, sun-safe, and sturdy (never restrictive) fabric, this full coverage top also comes with fixed straps with silicone for no-slip coverage.
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Free People
The boho store has a (surprisingly) strong selection of supportive bikini tops, up to size XL. The pretty underwire, halter and smocked designs have the femininity the brand is known for, plus the support you need to frolic.
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BCA by Rebecca Virtue
The brand has plenty of supportive swim styles for big busts--all under $20--like this Anna Tie Dye Halter Bikini Top, which has a cross-back tie that provides maximum support. It also has princess seam shirring across the chest for a pretty detail.
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