E cup sits just above D, though naming gets inconsistent here — UK sizing typically uses \'E\' directly, while US sizing often labels the equivalent size \'DDD\' instead. They usually refer to the same volume.
Common E cup sizes
| Size | Sister size (band up) | Sister size (band down) |
|---|---|---|
| 30E | 32D | 28F |
| 32E | 34D | 30F |
| 34E | 36D | 32F |
| 36E | 38D | 34F |
| 38E | 40D | 36F |
| 40E | 42D | 38F |
Sister sizing
A 34E (UK) is roughly equivalent to a 34DDD (US) — same cup volume, different label. Use the sister size calculator to find your full chain.
Fit tips
Check the brand's system
If shopping across US and UK brands, expect E and DDD to often mean the same thing.
Watch for gaping
If the cup gapes at the top, a size down in cup with a size down in band (sister sizing) often solves it.
Questions
E cup FAQs
Usually, yes — many brands treat them as equivalent labels for the same cup volume, particularly when comparing UK and US sizing.
Some sizing systems don't use \'E\' as a distinct step, treating DD and the next letter up as adjacent instead — this varies by brand and region.
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