The Best Bra-Sized Swimwear
Swim tops in real band-and-cup sizes exist, they are engineered like bras because they are bras with a day job, and the houses that make them are ones whose charts this site already tracks. Here is who, in their documented spans, and how to choose construction the water cannot undo.
Choosing swim by construction
Support in water comes from the same places it comes from dry: a band that closes and fits, wires or engineered seams shaping the cup, straps trimming rather than carrying. Wet elastane gives, so between sizes the firmer choice survives the pool where the comfortable one loosens by the second swim.
Foam cups float and gape when wet; seamed and wired swim cups hold their geometry. That is why bra-sized swim leans on the same seamed construction the full-bust lingerie houses use, and why a supportive bikini top looks structurally like a balconette with a rinse-care label.
Care is half the lifespan: chlorine eats elastane, so rinse immediately, drip dry, and rotate two tops through heavy use. The swim sizing page covers the chemistry and the sister-size moves for dress-sized tops.
Houses that cut swim in real sizes
| House | Why it is on this list | Charted span (lingerie reference) |
|---|---|---|
| Freya | Freya Swim is bra-sized swimwear by the brand's own line description in our dossier | 28–40, B–K (UK) · chart |
| Curvy Kate | UK full-bust house carrying strapless and swim depth, as our chart notes record | 28–44, D–K (UK) · chart |
| Pour Moi | Everyday and swim collections across B to K, per the dossier's own range description | 30–44, B–H (UK) · chart |
| PrimaDonna | Belgian deep-cup swim whose separate swim charts we explicitly document; check per line | 70–100, B–I (EU) · chart |
| Anita | The Rosa Faia line covers everyday and swim inside one of the widest European grids we chart | 65–100, A–K (EU) · chart |
| Yamamay | Italian fashion and swim on progressive numbering; compact range, honestly documented | 1–5, A–D (IT) · chart |
| Figleaves | Retailer with a large bra-sized swim range across the UK houses, per its dossier | multi-brand retailer |
Reason lines state what our published dossiers and chart pages record, not sponsorship. Spans are each house's lingerie chart as the reference point; swim lines can publish their own, so the product page's chart is the final word.
Get the size, then the top
Every swim decision keys off your measured size. The calculator gives it in two minutes, the swim estimator turns it into both swim systems, and if a fit symptom follows you into the water, the fix guides decode it on land first.
Size-specific brand lists:
Bra-sized swim, answered
What is bra-sized swimwear?
Swim tops sold in band-and-cup sizes, 32F instead of M, engineered with the wires, seams and bands of a bra. It exists because letter-sized swim fails at depth, and the houses that build it are largely the same full-bust houses whose lingerie charts we track.
Which brands make bikini tops in bra sizes?
From our documented houses: Freya Swim is bra-sized swimwear by the brand's own description, Pour Moi runs everyday and swim across B to K, Curvy Kate carries strapless and swim depth, PrimaDonna Swim runs its own charts, Anita's Rosa Faia line covers everyday and swim, and Yamamay does Italian fashion and swim. Figleaves retails a large bra-sized swim range across brands.
Should I buy my bra size in swim?
Start there, then check the product's own chart: swim lines can fork from the lingerie chart, a case we document at PrimaDonna. Wet stretch argues for the firmer choice when you sit between sizes, because every fabric gives in water.
What swim construction actually supports?
The same things a bra uses: underwires or engineered seams, a real band that closes rather than a sliding tie, and straps doing trim work instead of load work. Foam alone floats; structure supports.
Opens the matching HauteFlair collection; use your measured size there. HauteFlair is owned by the same company as Brasize.ai; that relationship never changes the sizing math, charts, or fit advice on this page. How this site makes money.
Swim season starts with a tape measure.
Your measured size is the one number every top above is waiting for.
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