Find your perfect fit ♡
A bra size has two parts: a number (the band — how it fits around your ribcage) and a letter (the cup — how much room for your bust). You only need a tape measure and two measurements.
Step 1 — Measure
- Upper bust: measure around the fullest part of your bust, tape level.
- Under bust: measure snugly around your ribcage, directly under your bust.
Step 2 — Find your band (the number)
| Under bust | UK band | EU band |
|---|---|---|
| 68–72 cm | 32 | 70 |
| 73–77 cm | 34 | 75 |
| 78–82 cm | 36 | 80 |
| 83–87 cm | 38 | 85 |
Step 3 — Find your cup (the letter)
Upper bust minus under bust:
| Difference | Cup |
|---|---|
| 7.5–10 cm | A |
| 10–12.5 cm | B |
| 12.5–15 cm | C |
| 15–17.5 cm | D |
Full size chart
| UK size | EU size | Under bust | Upper bust − under bust |
|---|---|---|---|
| 32A | 70A | 68–72 cm | 7.5–10 cm |
| 32B | 70B | 68–72 cm | 10–12.5 cm |
| 32C | 70C | 68–72 cm | 12.5–15 cm |
| 32D | 70D | 68–72 cm | 15–17.5 cm |
| 34A | 75A | 73–77 cm | 7.5–10 cm |
| 34B | 75B | 73–77 cm | 10–12.5 cm |
| 34C | 75C | 73–77 cm | 12.5–15 cm |
| 34D | 75D | 73–77 cm | 15–17.5 cm |
| 36A | 80A | 78–82 cm | 7.5–10 cm |
| 36B | 80B | 78–82 cm | 10–12.5 cm |
| 36C | 80C | 78–82 cm | 12.5–15 cm |
| 36D | 80D | 78–82 cm | 15–17.5 cm |
| 38B | 85B | 83–87 cm | 10–12.5 cm |
| 38C | 85C | 83–87 cm | 12.5–15 cm |
| 38D | 85D | 83–87 cm | 15–17.5 cm |
Which chéri size do I choose?
Each chéri set is made in a combined cup size, shown on the product page. First find your band number, then check your cup letter is included:
| Size on product | Fits cups | Available in |
|---|---|---|
| AB (e.g. UK 34AB / EU 75AB) | A and B | 32AB, 34AB, 36AB, 38AB |
| BC (e.g. UK 34BC / EU 75BC) | B and C | 32BC, 34BC, 36BC, 38BC |
Example: under bust 75 cm → band 34. Upper bust 87 cm → 87 − 75 = 12 cm → cup B. You are a 34B → 34AB or 34BC will both fit you. If you're a 34A, choose an AB style; if you're a 34C, choose a BC style.
Still unsure? Message us and we'll help you choose, privately.