Calvin Klein Bra Size Chart
Enter your measurements for your exact Calvin Klein size — then convert to UK, EU & AU.
Size chart — US · UK · EU · AU
Data verified Apr 2026 · Official size guide · See an error? Report it
Picking the Right Calvin Klein Bra in Your Size
| Style | Sizing | Note |
|---|---|---|
| Perfectly Fit / underwire | Band + cup | True to size |
| Icon Cotton bralette (formerly Modern Cotton) | S / M / L | Runs slightly small — size up if between |
| CK One lightly lined | Band + cup | Natural shape, light lining — true to size |
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Do Calvin Klein bras run true to size?
Calvin Klein bras run true to size in their underwire and lined styles — a 34C in CK matches a 34C in Victoria's Secret, ThirdLove, or any other brand using standard US sizing. The exception is the Modern Cotton bralette line, which uses S/M/L sizing and tends to run slightly small. Size up one cup if you're between bra sizes and shopping push-up or padded styles, since the padding takes up cup volume.
Calvin Klein Size Equivalents
Common Calvin Klein bra sizes converted to UK, EU, and AU — plus the sister sizes to try if the band feels off.
| US | UK | EU | AU | Sister sizes |
|---|---|---|---|---|
| 32C | 32C | 70C | 10C | 30D, 34B |
| 34B | 34B | 75B | 12B | 32C, 36A |
| 34C | 34C | 75C | 12C | 32D, 36B |
| 34D | 34D | 75D | 12D | 32DD, 36C |
| 36C | 36C | 80C | 14C | 34D, 38B |
| 36D | 36D | 80D | 14D | 34DD, 38C |
Need a different size? Use the full Calvin Klein size chart above or the calculator for your exact measurements.
How Calvin Klein Sizing Compares
If you wear a 34C in Calvin Klein, here's your likely size in other popular brands:
| Brand | US Size | UK Size | EU Size | Fit |
|---|---|---|---|---|
| Calvin Klein | 34C | 34C | 75C | true to size |
| Victoria's Secret | 34C | 34C | 75C | true to size |
| ThirdLove | 34C | 34C | 75C | true to size |
| Savage x Fenty | 34C | 34C | 75C | true to size |
| Wacoal | 34C | 34C | 75C | true to size |
| Aerie | 34C | 34C | 75C | true to size |
Sizes shown use standard charts. Actual fit may vary by style — always check the brand's specific size guide.
Calvin Klein Sizing & Fit Guide
Calvin Klein bras generally run true to size. Their Modern Cotton bralettes use S/M/L sizing that runs slightly small — size up if between sizes. Underwire bras fit standard.
How to measure for a Calvin Klein braDoes Calvin Klein Run True to Size?
Calvin Klein bras generally run true to size in their underwire and lined styles. The band sizing is consistent with standard US sizing, so a 34 band in CK should feel the same as a 34 in Victoria's Secret or ThirdLove. The exception is their popular Modern Cotton bralette line, which uses S/M/L sizing and tends to run slightly small — most women find sizing up gives a more comfortable fit. For underwire bras, CK's cups are moderately shaped with less padding than VS, so they may feel slightly different even in the same size.
Calvin Klein Bra Styles and Sizing
Calvin Klein offers several distinct bra categories, each with slightly different sizing considerations. Modern Cotton bralettes (S/M/L) are their bestseller — size up if between sizes. Underwire bras like the Perfectly Fit line use standard band/cup sizing and fit true. Their CK One range features lightly lined bras that provide a natural shape. Sports bras come in both S/M/L and band/cup sizing depending on the support level. For all band/cup styles, the size chart above shows your CK size in US, UK, EU (with cm measurements) so you can find the right fit regardless of which sizing system you're used to.
Calvin Klein Size Range
Calvin Klein's standard bra range runs from 30A to 38DD in band/cup sizes. This covers the most common sizes but is narrower than some competitors — Victoria's Secret goes up to 40DDD and ThirdLove extends to 48H. If you're at the edge of CK's range, check their sister sizes: a 38DD could try 40D for a looser band with the same cup volume. For their Modern Cotton bralettes, S fits roughly 32A-34B, M fits 34B-36C, and L fits 36C-38D.