34DD bra size
34DD labels band 34 and cup DD; the cup marks a difference of 5 in between your bust and the band, rounded to whole inches.
US 34DD, also written 34E · UK 34DD
- Difference5 in12.7 cm
- Underbust, underbust method33 to 35 in83.82 to 88.9 cm
- Bust for this cup38.5 to 39.5 in97.79 to 100.33 cm
Each range includes its first figure and stops just short of its last.
Which measurements give a 34DD
The label is a band and a cup, not a body measurement. Each of the three published rules turns the same label into different measurements.
| Method | Underbust (in) | Underbust (cm) | Bust (in) |
|---|---|---|---|
| Underbust method | 33 to 35 in | 83.82 to 88.9 cm | 38.5 to 39.5 in |
| Add-4 method | 28.5 to 30.5 in | 72.39 to 77.47 cm | 38.5 to 39.5 in |
| EU method, band 75 | 28.54 to 30.51 in | 72.5 to 77.5 cm | Cup read in cm |
Each range includes its first figure and stops just short of its last.
34DD in six sizing systems
| System | Band | Cup | Size |
|---|---|---|---|
| US | 34 | DD/E | 34DD/E |
| UK | 34 | DD | 34DD |
| EU | 75 | E | 75E |
| FR/BE | 90 | E | 90E |
| AU/NZ | 12 | DD | 12DD |
| JP | 75 | F | 75F |
Bands and letters are label equivalents, not body measurements. JP letters vary by brand.
Sister sizes of 34DD
A sister size moves the band one step and the cup one letter the other way.
- 2 bands down30DDDD
- 1 band down32DDD
- 1 band up36D
- 2 bands up38C
For 34DD, cup DD applies when your bust is 38.5 to 39.5 in on band 34. The underbust method and add-4 method both assign this bust range to the label, though their underbust ranges for band 34 do not overlap.
The 32E sister size pairs a lower band label with a higher cup letter, while 36D pairs a higher band label with a lower cup letter. Farther out, 30F continues the lower-band path and 38C continues the higher-band path. Published charts disagree on the underbust used for band 34: the underbust method and add-4 method give different ranges.
The US label 34DD/E uses DD and E for this difference, while the EU label 75E uses E. The JP label 75F uses F, one letter later than the EU cup letter; JP letters vary by brand. One published chart reports US variants such as D1 to D5, E, EE and EEE, while other charts do not.
Questions
What does 34DD mean?
34DD is a band of 34 with a cup that stands for a difference of 5 in (12.7 cm) between bust and band in US sizing.
What measurements give a 34DD?
By the underbust method, an underbust of 33 to 35 in (83.82 to 88.9 cm) gives band 34, and a bust of 38.5 to 39.5 in gives this cup. By the add-4 method, band 34 comes from an underbust of 28.5 to 30.5 in. Each range includes its first figure and stops just short of its last.
What are the sister sizes of 34DD?
The sister sizes of 34DD are 30DDDD, 32DDD, 36D and 38C. Each step up in band takes the cup one letter down, and each step down takes it one letter up.