UK vs US Bra Sizes
Are UK and US bra sizes the same? Up to a D cup, yes. After that, things get complicated. Read our guide to easily convert between British and American bra sizes.
The Crucial Difference: Band vs Cup
The Band Sizes Are Identical
Good news: UK and US band sizes are exactly the same. Both countries measure the underbust in inches. If you are a 34 band in the UK, you are a 34 band in the US.
The Cup Sizes Diverge After D
Up to a D cup (A, B, C, D), UK and US sizes match perfectly. But after D, the UK uses double letters (DD, E, F, FF, G) while the US continues largely with single letters or DDDs (DD/E, DDD/F, G, H).
Complete UK vs US Cup Size Chart
| UK Cup Size (British) | US Cup Size (American) |
|---|---|
| A | A (Same) |
| B | B (Same) |
| C | C (Same) |
| D | D (Same) |
| DD | DD (or E) |
| E | DDD (or F) |
| F | G |
| FF | H |
| G | I |
| GG | J |
| H | K |
| HH | L |
| J | M |
How to Check the Label
When buying a bra online, always check where the brand is from. UK brands like Panache, Freya, and Bravissimo use UK sizing. US brands like Victoria's Secret, ThirdLove, and Wacoal use US sizing.
- If you see double letters past DD (like FF, GG, HH), it is definitely a UK sizing system.
- If you see DDD, it is definitely a US sizing system.
Frequently Asked Questions
What is a 34F UK in US size?+
A UK 34F is equivalent to a US 34G. The band stays the same (34) but the cup size shifts.
What is a US 36DDD in UK size?+
A US 36DDD is equivalent to a UK 36E. US brands often use DDD instead of the letter F or E.
Are Victoria's Secret bras UK or US sizing?+
Victoria's Secret uses US sizing, even in their UK stores. If you normally wear a UK 32E, you will need a 32DDD at Victoria's Secret.