What are the sister sizes of 28C?

30B — same cup volume, different band.

Is 28C the same in every brand?

No. A 28C can fit differently between brands because of pattern, fabric and cup shape. Use it as a starting point and try a sister size when switching brands.

28C bra size — conversion chart, sister sizes & brands

A 28C bra (US notation) in every regional standard. The same band-and-cup, labelled eight different ways.

US	UK	EU	FR	IT	AU	JP	IN
28C	28C	60C	75C	60C	6C	60C	28C

Band conversions are exact; cup fit still varies by brand, style, and body — a conversion is a starting point, not a guarantee.

Sister sizes of 28C

Sister sizes hold the same cup volume with a different band — the quickest fix when a band feels too tight or too loose.

30B

Not sure you're a 28C? Two measurements, two minutes — free, nothing stored.

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Brands that make C-cup bras

28C FAQ

What is 28C in EU sizing?: 28C (US) is EU 60C. In UK sizing it is 28C. Band conversions are exact; cup fit still varies by brand, style, and body — a conversion is a starting point, not a guarantee.
What are the sister sizes of 28C?: 30B — same cup volume, different band.
Is 28C the same in every brand?: No. A 28C can fit differently between brands because of pattern, fabric and cup shape. Use it as a starting point and try a sister size when switching brands.