Reviewed
42D bra size
A 42D has a 42-inch band and a D cup, about 4 inches between band and bust. In the UK it is 42D, in Australia 20D and in Europe 95D.
- US
- 42D
- UK
- 42D
- AU
- 20D
- EU
- 95D
- FR
- 110D
Also fits (sister sizes): 40DD firmer band · 44C looser band · all same-volume sizes ↓
42D measurements
- Snug underbust
- 42–43 in · 107–109 cm
- Bust, fullest part
- about 46 in · 116–118 cm
- Cup difference
- 4 in (D 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.
42D sister sizes
Same cup volume, different band. If a 42D 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 42D doesn't fit
- Band rides up at the back
- Try 40DD
- Band digs in, cups fit
- Try 44C
- Spilling over the cups
- Try 42DD
- Cups gape or wrinkle
- Try 42C
Not sure what's wrong? Run through the 4-point fit check.
42D questions
What is the sister size of 42D?
40DD (one band down, one cup up) and 44C (one band up, one cup down). Sister sizes hold the same cup volume on a different band.
What is 42D in UK, Australian and European sizes?
UK 42D, Australia 20D, Europe 95D and France 110D. US and UK cup letters match up to DD and then split.
What measurements are a 42D?
A snug underbust of about 42–43 in (107–109 cm) and a bust of about 46 in (116–118 cm). Measure with the tape level and use the calculator for an exact result.
Is 42D a big size?
42D has a very full cup volume for a 42 band. Cup letters only mean something next to the band: a 42D holds the same as 28K or 30J.