Full-Bust Swimsuit Size Translator

Your bra size in full-bust swim brands

Built on the same cross-brand fit engine as our bra size translator. The last columns show where a standard US 34DD, 36G and 38H land in each swim brand.

Translations are guidance from cross-brand fit data, not a guarantee — swim fit also depends on shape, cut, and how much support you want. v1 swim offsets are rules-derived and improve as we collect fit outcomes.

Common questions about full-bust swim sizing

Why do swimsuits never fit the same as my bra size?

Swimwear brands each decide what a size means, and most mainstream labels only offer S–XL — which ignores the cup entirely. Full-bust swim brands (Panache, Freya, Elomi and others) instead size their underwire tops by band and cup, like a bra. So the fix is to shop the brands that use your real band+cup, then translate your size across them.

What is my swim size if I wear a 34DD bra?

In the full-bust swim brands that size by band and cup, a US 34DD lands at a UK 34DD in true-to-size lines like Panache Swim, Freya Swim and Fantasie Swim. The band stays the same; the cup letters differ above D (UK runs D, DD, E, F, FF, G…), so the translation matters most for fuller cups.

Which swim brands make full-bust (D+ cup) sizes?

Panache, Freya, Elomi, Fantasie, Curvy Kate, Sculptresse by Panache, Pour Moi and Bravissimo all make underwire swimwear in D+ cups, with several going to HH/J/L. They size their swim tops to their bra fittings, which is why a bra-size translation works for them and not for S–M–L labels.

Do full-bust swim brands run true to size?

Mostly yes — Panache, Freya, Elomi and Fantasie swim run true to their UK bra sizing. Curvy Kate swim cups can run slightly small versus its bra line, so if you are between sizes there, try one cup up. These are guidance from cross-brand fit data, not a guarantee; fit also depends on shape and style.