👙 Bra Size
38B Bra Size — UK, EU & French Conversion
A US 38B bra in UK, European and French sizing, with its sister sizes. Not sure 38B is right? Measure with the bra calculator first.
US 38B = UK 38B
EU 85B · French 100B
A US 38B bra converts to UK 38B, EU 85B and French 100B. The band number maps on a fixed scale, while cup letters shift between systems above D.
| Region | Size |
|---|---|
| US | 38B |
| UK | 38B |
| EU (Europe) | 85B |
| FR / ES (France, Spain) | 100B |
Sister sizes for 38B
Same cup volume, different band — try these if the band feels tight or loose but the cup is right:
36CSister down
40ASister up
⚠️ US cup lettering above D varies by brand (DD vs E, DDD vs F). Match by the EU/UK equivalent when a brand's letters differ.
All bra sizes → · Bra calculator → · Converter →
What is a US 38B bra in UK and EU sizing?
A US 38B is a UK 38B, EU 85B and French 100B.
What are the sister sizes of 38B?
Same cup volume, different band: 36C, 40A.
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