Cherry SizeCalculator › All bra sizes, size by size › 28B
28B bra size — conversions, sister sizes & fit
A 28B fits an underbust of about 58–62 cm with a bust 11–14 cm larger than the band. Here is everything that label actually means — and how to check it really fits you.
Your bra size
28B US
Which measurements give 28B?
| cm | |
|---|---|
| Underbust (snug) | 58–62 |
| Bust (fullest point) | 69–76 |
| Difference (cup volume) | 11–14 |
Between two sizes? Measurements near the edges of these ranges can also fit the neighbouring size — check the sister sizes below and, in doubt, trust the fit checks from our measuring guide.
Sister sizes of 28B
28C and 30A hold the same cup volume as 28B with a tighter or looser band. If the band of a 28B rides up, try 28C; if it digs in, try 30A.
Small bands with small cups are genuinely underserved on the high street: many mainstream brands start at a 65 or even 70 band, so a lot of what fits you sits in petite-focused or Asian-market lines. Avoid the classic trap of taking a bigger band to find a cup that exists — a loose band gives no support. Look for brands whose range is confirmed to start at your band, and use the sister size only as a fitting-room fallback.
Who makes 28B? 28 of the 632 brands in the Cherry Size catalogue are confirmed to carry 28B in their standard range. But each of them cuts it differently — the app tells you the exact size to try at every one of them, from your own measurements.
See 28B brand by brand28B in questions
What is 28B in European sizing?
A 28B corresponds to 60B in European sizing and 75B in French/Spanish sizing. The cup volume is identical — only the band numbering changes between systems.
Is 28B big or small?
It is one of the smaller sizes: a petite band with a shallow cup. Cup letters mean nothing alone: a cup only has a volume relative to its band, which is why 28C and 30A hold exactly the same volume as 28B.
My 28B doesn't fit — what should I try?
If the band rides up or feels loose, go to 28C. If the band digs in while the cup is fine, go to 30A. If the cup overflows, try one cup up in the same band; if it wrinkles empty, one cup down. Two minutes with the calculator confirms it.
Nearby sizes
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