Size Guide
30D Bra Size
Everything you need to know about bra size 30D — measurements, sister sizes, international equivalents, and fit advice.
Measurements for 30D
Underbust (Band)
29 to 31 inches (74 to 79 cm)
Full Bust
approximately 35 inches (89 cm)
30D in Other Sizing Systems
US
30D
UK
30D
EU
65D
FR
80D
AU
8D
Sister Sizes for 30D
These sizes have the same cup volume as 30D. Try them if the band feels too tight or too loose.
28DD ↔ 30D ↔ 32C
← Tighter band, bigger cup · Looser band, smaller cup →
Fit Tips for 30D
D cups benefit from wider straps for comfort. Unlined bras can provide a more natural shape at this size.
If your 30D bra is gapping at the top of the cup, the cup may be too large or the wrong shape — try a demi-cup or balconette. If the center gore doesn't sit flat, go up one cup size.
Not sure about your size? Measure yourself and double-check.
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