Bra Size by Brand
Bra sizes aren't standardized. A 34D in one brand can fit like a 32DD in another. Here's how popular brands compare.
UK vs US Sizing
UK and US sizes are similar up to D cup. After that, UK uses DD, E, F, FF, G, GG, H... while US uses DD, DDD, G, H... Always check if a brand uses UK or US sizing!
Brand Sizing Notes
Victoria's Secret
Runs small in band. Consider going up a band size. Limited extended sizes.
ThirdLove
True to size with half-cup options. Great for in-between sizes.
Aerie
Runs slightly large in band. Consider sizing down.
Wacoal
True to size, Japanese sizing. Excellent for full bust.
Natori
Runs small in cup. Consider going up a cup size.
Panache
UK sizing. True to size. Great for full bust.
Elomi
UK sizing. True to size. Extended band and cup range.
Freya
UK sizing. Runs slightly small in cup.
Chantelle
European sizing. True to size. Luxurious fit.
Simone Perele
European sizing. Runs small in band.
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Frequently Asked Questions
Why do bra sizes differ between brands?
Bra sizes differ between brands because there is no universal sizing standard in the lingerie industry. Each brand uses its own patterns, materials, and fit models during development. A 34D at Victoria's Secret is built on a different body form than a 34D at Wacoal, which leads to noticeable differences in how the same labeled size actually fits.
Is US and UK bra sizing the same?
US and UK bra sizes are identical up to a D cup, but they diverge significantly after that. UK sizing follows a consistent alphabetical progression (DD, E, F, FF, G, GG, H), while US sizing varies by brand and often uses DD, DDD (or F), G, H. Always check whether a brand uses UK or US sizing before purchasing, especially in larger cup sizes.
How do I convert European bra sizes to US sizes?
European band sizes are measured in centimeters rather than inches, so a EU 75 equals a US 34 and a EU 80 equals a US 36. Cup sizes also differ: European brands often label cups as A, B, C, D, E, F instead of using DD or DDD. A conversion chart specific to the brand is the most reliable way to find your size, since European sizing conventions can vary by country.
Should I trust the size chart on a brand's website?
Brand size charts are a helpful starting point, but they are not always perfectly accurate. They are usually based on the brand's own fit model and may not account for every body type. Cross-reference the chart with customer reviews that mention fit, and consider ordering two sizes if the brand has a good return policy so you can compare at home.
What should I do if I'm between sizes at a particular brand?
If you fall between sizes, try using sister sizes to find a better fit. For example, if a 34C feels tight in the band but the cups fit, try 36B. Many brands also offer half-cup sizes or flexible stretch fabrics that accommodate in-between measurements. Reading customer reviews for fit advice on the specific style you want is also very helpful.
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