Size Guide
34DD Bra Size
Everything you need to know about bra size 34DD — measurements, sister sizes, international equivalents, and fit advice.
Measurements for 34DD
Underbust (Band)
33 to 35 inches (84 to 89 cm)
Full Bust
approximately 40 inches (102 cm)
34DD in Other Sizing Systems
US
34DD
UK
34DD
EU
75E
FR
90E
AU
12DD
Sister Sizes for 34DD
These sizes have the same cup volume as 34DD. Try them if the band feels too tight or too loose.
32DDD ↔ 34DD ↔ 36D
← Tighter band, bigger cup · Looser band, smaller cup →
Fit Tips for 34DD
DD cups need good band support. Make sure 80% of support comes from the band, not the straps.
If your 34DD 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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