Bra Sizes by Brand

Shein uses Asian sizing which runs significantly smaller than US/EU sizing. A US 34B typically needs to size up by 1–2 cup sizes on Shein. Always check measurements, not just the letter.

ASOS uses UK sizing across all their lingerie. UK sizing uses the same band numbers as US, but cup letters diverge from DD onwards. ASOS sizing is generally consistent and true to size.

H&M offers bras in both EU sizing (70, 75, 80…) and letter sizes (S, M, L) depending on the style. Underwired bras typically use EU sizing; bralettes and soft bras use S/M/L. H&M tends to run slightly small in the cup.

Zara uses EU sizing for structured bras. Their sizing tends to be consistent but their range is more limited — typically 70–95 in the band and A–D in the cup. If you're above a D cup, Zara's selection will be limited.

Victoria's Secret uses standard US sizing and is one of the most consistent brands for true-to-size bras. They offer an extensive range from 30A to 40DDD, making them one of the more size-inclusive mainstream brands.

Marks & Spencer uses UK sizing and is widely regarded as one of the most size-inclusive and accurately sized bra retailers. They offer sizes from 28A to 46J, making them a go-to for hard-to-find sizes.

Primark uses UK sizing and is budget-friendly. Their range is more limited (typically 32A–40E), but sizing is generally reliable for core sizes. Primark bras are best in the 32–38 band and A–D cup range.

ThirdLove is a US direct-to-consumer brand best known for introducing half-cup sizes — so a 34B½ sits between a 34B and 34C. This makes them useful for women who fall between standard sizes. They offer US sizing from 30AA to 48H. Sizing runs true to US standard.

Savage X Fenty (Rihanna's lingerie brand) uses US sizing and is notable for its wide size range and inclusive marketing. Bras are available from 32A to 46DDD. Sizing is generally true to US standard, but the brand skews slightly generous in the cup — many women find they size down one cup from their usual size.

Bravissimo is a UK retailer and own-label brand exclusively for D–L cup. They are one of the best resources for larger cup sizes — every bra is designed specifically for a fuller bust, and their fitting expertise is excellent. Sizing is UK standard and very accurate.

Freya is a UK brand specialising in D–K cup bras in a wide range of styles — balconette, full-cup, plunge, and sports. Their sizing is UK standard and highly consistent. Freya is particularly well regarded for balconette styles in larger cups and for their Freya Active sports bra line.

Triumph is a Swiss-German brand available worldwide, including across Africa, Asia, and Europe. They use EU sizing (70, 75, 80… with letter cups). Triumph is one of the most widely stocked international brands in African department stores and is sold in Kenya, Nigeria, South Africa, and Egypt.

Calvin Klein uses US sizing for structured bras and XS–XL for bralettes and wireless styles. Their range is more limited than specialist brands — typically 32–38 band and A–D cup — but sizing is accurate and consistent. CK is best for minimalist everyday styles in core sizes.

Wacoal is a Japanese brand with a strong US and international presence. They are known for exceptional construction quality, precise fit, and a wide range that extends to 44DDD in the US. Wacoal uses US sizing for their international line, but their Japanese line uses JP sizing (separate band scale). Sizing tends to run slightly small in the band.

Frequently Asked Questions