Reviewed
34DDD (UK 34E) bra size
A 34DDD has a 34-inch band and a DDD cup, about 6 inches between band and bust. In the UK it is 34E, in Australia 12E and in Europe 75F.
- US
- 34DDD
- UK
- 34E
- AU
- 12E
- EU
- 75F
- FR
- 90F
Also fits (sister sizes): 32G firmer band · 36DD looser band · all same-volume sizes ↓
34DDD measurements
- Snug underbust
- 34–35 in · 86–89 cm
- Bust, fullest part
- about 40 in · 100–103 cm
- Cup difference
- 6 in (DDD cup)
These are starting points from the band-and-cup method. Brands differ by about a size, so a two-minute measurement beats any chart.
34DDD sister sizes
Same cup volume, different band. If a 34DDD band feels too loose, go down a band and up a cup; if it feels tight, go up a band and down a cup.
If a 34DDD doesn't fit
- Band rides up at the back
- Try 32G
- Band digs in, cups fit
- Try 36DD
- Spilling over the cups
- Try 34G
- Cups gape or wrinkle
- Try 34DD
Not sure what's wrong? Run through the 4-point fit check.
Compare 34DDD
Sizes next to 34DDD
34DDD questions
What is the sister size of 34DDD?
32G (one band down, one cup up) and 36DD (one band up, one cup down). Sister sizes hold the same cup volume on a different band.
What is 34DDD in UK, Australian and European sizes?
UK 34E, Australia 12E, Europe 75F and France 90F. US and UK cup letters match up to DD and then split.
What measurements are a 34DDD?
A snug underbust of about 34–35 in (86–89 cm) and a bust of about 40 in (100–103 cm). Measure with the tape level and use the calculator for an exact result.
Is 34DDD a big size?
34DDD has a very full cup volume for a 34 band. Cup letters only mean something next to the band: a 34DDD holds the same as 28I or 30H.