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Harper Wilde bra sizes: chart, conversions and sister sizes
Harper Wilde labels its bras in US sizes. Here is its size range according to Harper Wilde's size guides (harperwilde.com, October 2026), its equivalents in EU, FR, UK and JP sizing, and the closest sister size when a size falls outside that range.
- Label system
- US sizese.g. 34C
- Bands
- 32–42EU/JP 70–95 · FR 85–110
- Largest cup
- DDDEU/FR/JP F · UK E
- Official guide
- harperwilde.com
What to know about Harper Wilde labels
Harper Wilde labels its bras in US sizes but writes its two largest cups with two names: DD/E and DDD/F. A Harper Wilde 34 DD/E is a US 34DD (UK 34DD, EU 75E), and a 34 DDD/F is a US 34DDD (UK 34E, EU 75F): the second letter is the European one.
Its underwire size guide crosses an under bust measurement (27–28 inches up to 37–38 inches) with a full bust measurement and covers 32A to 42DDD. Its wireless bras are sold in letter sizes, XS to 6XL, matched to band-and-cup sizes from 30 to 50 in a separate grid.
On a product page, band and cup are two separate choices: for example 36, then DD/E.
How US sizes work
A US size is a band number and a cup letter. The band is an inch-based label (30, 32, 34…) shared with UK sizes. After D, most US brands go DD, DDD, G, H, I, J (some write DDDD for G, and a US G is a UK F), where UK cups go DD, E, F, FF, G, GG, H, HH, J. EU and French sizes number the band differently: a US 34 band is 75 in EU sizes and 90 in French sizes.
The Harper Wilde size range
According to Harper Wilde's underwire bra size guide (harperwilde.com, October 2026), Harper Wilde bras come in bands 32–42 (US) with cups up to DDD. The tables start at cup A. A given style can come in fewer sizes: check its product page.
| US/UK | EU/JP | FR | Underbust (cm) | Underbust (in) |
|---|---|---|---|---|
| 32 | 70 | 85 | 67.5–72.5 | 26.6–28.5 |
| 34 | 75 | 90 | 72.5–77.5 | 28.5–30.5 |
| 36 | 80 | 95 | 77.5–82.5 | 30.5–32.5 |
| 38 | 85 | 100 | 82.5–87.5 | 32.5–34.4 |
| 40 | 90 | 105 | 87.5–92.5 | 34.4–36.4 |
| 42 | 95 | 110 | 92.5–97.5 | 36.4–38.4 |
| US | EU/FR/JP | UK | Bust − underbust (cm) | Bust − underbust (in) |
|---|---|---|---|---|
| A | A | A | 8.75–11.25 | 3.4–4.4 |
| B | B | B | 11.25–13.75 | 4.4–5.4 |
| C | C | C | 13.75–16.25 | 5.4–6.4 |
| D | D | D | 16.25–18.75 | 6.4–7.4 |
| DD | E | DD | 18.75–21.25 | 7.4–8.4 |
| DDD | F | E | 21.25–23.75 | 8.4–9.4 |
Common Harper Wilde sizes in other systems
| US | EU | FR | UK | JP |
|---|---|---|---|---|
| 32A | 70A | 85A | 32A | A70 |
| 32B | 70B | 85B | 32B | B70 |
| 32C | 70C | 85C | 32C | C70 |
| 32D | 70D | 85D | 32D | D70 |
| 32DD | 70E | 85E | 32DD | E70 |
| 32DDD | 70F | 85F | 32E | F70 |
| 34A | 75A | 90A | 34A | A75 |
| 34B | 75B | 90B | 34B | B75 |
| 34C | 75C | 90C | 34C | C75 |
| 34D | 75D | 90D | 34D | D75 |
| 34DD | 75E | 90E | 34DD | E75 |
| 34DDD | 75F | 90F | 34E | F75 |
| 36A | 80A | 95A | 36A | A80 |
| 36B | 80B | 95B | 36B | B80 |
| 36C | 80C | 95C | 36C | C80 |
| 36D | 80D | 95D | 36D | D80 |
| 36DD | 80E | 95E | 36DD | E80 |
| 36DDD | 80F | 95F | 36E | F80 |
| 38A | 85A | 100A | 38A | A85 |
| 38B | 85B | 100B | 38B | B85 |
| 38C | 85C | 100C | 38C | C85 |
| 38D | 85D | 100D | 38D | D85 |
| 38DD | 85E | 100E | 38DD | E85 |
| 38DDD | 85F | 100F | 38E | F85 |
Estimates from standard size tables; a given style can differ. UK and US band numbers are labels, not your underbust in inches.
Sizes just outside the Harper Wilde range: the closest sister size
A sister size keeps about the same cup volume on another band. For a size just outside the Harper Wilde range given on this page, here is the sister size inside it.
| Size (US) | Sister size in the range | Change |
|---|---|---|
| 32DDDD/G | 34DDD | one band up, one cup down |
| 34DDDD/G | 36DDD | one band up, one cup down |
| 36DDDD/G | 38DDD | one band up, one cup down |
| 38DDDD/G | 40DDD | one band up, one cup down |
| 30B | 32A | one band up, one cup down |
| 30C | 32B | one band up, one cup down |
| 30D | 32C | one band up, one cup down |
| 44B | 42C | one band down, one cup up |
| 44C | 42D | one band down, one cup up |
| 44D | 42DD | one band down, one cup up |
Harper Wilde sizes: your questions
What does the Harper Wilde bra size chart cover?
Harper Wilde sizes are US sizes. According to Harper Wilde's size guides (harperwilde.com, October 2026), the range covers bands 32–42 and cups up to DDD. The tables above give each of them in EU, FR, UK and JP sizing; for example, a 34C from Harper Wilde is EU 75C, FR 90C, UK 34C and JP C75.
What do DD/E and DDD/F mean at Harper Wilde?
They are the brand's two largest cups, each written with its US and its European letter. DD/E is a US DD, which is DD in UK sizes and E in EU sizes; DDD/F is a US DDD, which is E in UK sizes and F in EU sizes. So a 36 DDD/F is a UK 36E and an EU 80F.
What is the Harper Wilde bra size range?
According to Harper Wilde's size guides (harperwilde.com, October 2026), the Harper Wilde range covers bands 32–42 (EU 70–95) and cups up to DDD (UK E). The tables start at cup A. A given style can come in fewer sizes: check its product page.
How do Harper Wilde sizes convert to European sizes?
Harper Wilde uses US sizes. Converting to EU sizes: the band number changes (32 → 70, 34 → 75, 36 → 80); cups DD → E and DDD → F, the other letters unchanged. For example, 34DD becomes 75E.
Is there a Harper Wilde bra size calculator?
Harper Wilde has a find-my-fit tool and size guides on its website. To start from a tape measure, measure your underbust and your bust: the Cherry Size calculator turns the two numbers into a size estimate in US sizes and the other main systems, and the tables above give the US label to look for at Harper Wilde.
Is my Harper Wilde size the same as at other brands?
With the same measurements, the size that fits can change from brand to brand and from style to style, and the tables on this page convert labels only: they cannot show that difference. The Cherry Size app takes two measurements, underbust and bust, and tells you the size to try at Harper Wilde.
Harper Wilde sizes on the brand's own website
Harper Wilde sizes, on the brand's website
Don't know your size yet?
Measure your underbust and bust with a soft tape: the calculator turns them into a size estimate in every system, and the guide shows how to measure in two minutes.
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Get the appCherry Size is not affiliated with Harper Wilde; brand names are used for information only. Size range: Harper Wilde's size guides (harperwilde.com, October 2026). Conversions: Cherry Size size tables.
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