How Wonderbra sizing works
Wonderbra uses us sizing (inch bands, us cup letters). Measure your snug underbust and standing bust as described in our fit guide, then read your size from the chart below. If you already know your size in another system, convert it first with our size converter.
Good to know: Check whether the regional site uses US or EU labelling.
Chart guide
| Band | Cup | |||||
|---|---|---|---|---|---|---|
| 32 | 32A | 32B | 32C | 32D | 32DD | 32DDD |
| 34 | 34A | 34B | 34C | 34D | 34DD | 34DDD |
| 36 | 36A | 36B | 36C | 36D | 36DD | 36DDD |
| 38 | 38A | 38B | 38C | 38D | 38DD | 38DDD |
Standard inch-based chart. Brands grade differently, so confirm on the official chart below.
Brand charts change over time. If anything here disagrees with the official chart linked above, the official chart wins. The outbound link is provided for reference.
Frequently asked questions
What size system does Wonderbra use?
Wonderbra uses us sizing (inch bands, us cup letters). Check whether the regional site uses US or EU labelling.
How do I convert my size to Wonderbra?
Measure your underbust and bust, get your size in your usual system with our calculator, then map it across with the size converter before checking the official Wonderbra chart.