Size & fit guide
Two measurements and two minutes. Get your size right the first time — and save yourself a return.
Quick bra size calculator
Enter two measurements in inches and we'll estimate your size. Round to the nearest inch — accuracy beats precision here.
How to measure
You'll need a soft tape measure and, ideally, a non-padded bra. Stand tall and keep the tape level all the way around.
- Band: measure snugly around your ribcage, directly under your bust. Exhale and read the number in inches.
- Bust: measure loosely around the fullest part of your bust, usually across the nipple line.
Then subtract your band from your bust: each inch of difference is one cup size (1"=A, 2"=B, 3"=C, 4"=D). Prefer the full walkthrough? Read our complete fit guide.
Bra size chart
| Band (under-bust, in) | Band size | Bust − band = 1" | 2" | 3" | 4" |
|---|---|---|---|---|---|
| 27–28" | 30 | 30A | 30B | 30C | 30D |
| 29–30" | 32 | 32A | 32B | 32C | 32D |
| 31–32" | 34 | 34A | 34B | 34C | 34D |
| 33–34" | 36 | 36A | 36B | 36C | 36D |
Apparel, sleepwear & loungewear
For bralettes, slips, sets and loungewear we use standard XS–XXL sizing. Use your bust, waist and hip measurements and size up if you're between sizes or prefer a relaxed fit.
| Size | UK | EU | US | Bust (in) | Waist (in) | Hip (in) |
|---|---|---|---|---|---|---|
| XS | 6 | 34 | 2 | 31–32 | 24–25 | 34–35 |
| S | 8 | 36 | 4 | 33–34 | 26–27 | 36–37 |
| M | 10 | 38 | 6 | 35–36 | 28–29 | 38–39 |
| L | 12 | 40 | 8 | 37–39 | 30–32 | 40–42 |
| XL | 14 | 42 | 10 | 40–42 | 33–35 | 43–45 |
| XXL | 16 | 44 | 12 | 43–45 | 36–38 | 46–48 |
Between sizes?
For structured underwire bras, trust your band measurement first. For stretch bralettes and slips, size down for a snug fit or up for relaxed. Still unsure? Message our fit team — we love this stuff.
Signs of a great fit
- The band sits level and firm — two fingers underneath, no more.
- Cups contain everything smoothly, with no spillage or gaping.
- The centre gore lies flat against your sternum.
- Straps support without digging into your shoulders.
- You forget you're wearing it. That's the real test.