Select Your Bra Size Chart

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US Bra Size Chart

Find your US bra size using band and bust measurements.

UK flag
UK Bra Size Chart

Determine your UK bra size based on band and bust measurements.

US vs. UK Bra Size Charts

Explore the differences between US and UK bra sizes, check out a simple guide to each system, and get tips for finding your perfect fit using this bra size chart.

Why Are There Different Bra Size Charts?

You might be wondering why there are different bra size charts for different countries. Bra sizes are generally determined by the band size (around your rib cage) and the cup size (difference between your bust and band measurements).

However, measurement systems vary slightly between regions, leading to unique size charts for each country. The US and UK have their own methods for labeling cup sizes, which can make things confusing when shopping internationally.

How Do US and UK Bra Sizes Differ?

The main difference between US and UK bra sizes is in the cup sizing system. Here’s a breakdown:

US Bra Sizes

The US bra sizing system generally follows a more straightforward progression. After A, B, C, and D, it moves to DD, DDD (or F), and so on. This system can sometimes include variations such as E or F, depending on the brand.

UK Bra Sizes

The UK system, on the other hand, introduces more double letters to indicate cup size increases. For example, after D, they move to DD, E, F, FF, G, GG, and so on. This approach gives UK bra sizes more intermediate options, which can be helpful for those who fall between standard cup sizes in the US system.

Example of US vs. UK Bra Cup Progression:

US SizesUK Sizes
AA
BB
CC
DD
DDDD
DDD/EE
FF
-FF
GG

Band Sizes: Mostly Consistent

The band sizes (e.g., 32, 34, 36, etc.) are generally consistent between the US and UK.

So, if you’re a 34 band in the US, you’ll typically be a 34 in the UK.

However, it’s always best to check a brand’s specific size chart since there can still be minor differences in fit.

How to Convert Between US and UK Bra Sizes

To convert from US to UK sizing or vice versa, you’ll need to keep these cup differences in mind. For example:

  • If you wear a US 34DD, your UK size would likely be 34E.
  • If you wear a UK 36FF, your US size would be around 36G.

Using a size conversion chart can help make the process easier, especially when you’re shopping online or ordering from international brands.

Tips for Finding Your Perfect Fit

  • Measure Regularly: Bodies change over time, so measure yourself every 6-12 months to keep your sizing up-to-date. Measure both your band size (around the rib cage, directly under the bust) and your bust size (around the fullest part of your chest).
  • Check Brand-Specific Charts: Different brands may have slight variations in fit. Always consult a brand's size chart, especially if you're trying a new brand.
  • Try Different Styles: Bra styles like balconette, plunge, and full-cup can fit differently, even within the same size. Try different cuts to see which provides the best comfort and support for you.
  • Consider Sister Sizes: If you’re in between sizes, you may want to try a sister size. For instance, if 34D feels too tight in the band, a 36C might be more comfortable while providing a similar cup volume.

Which Size Chart Should You Use?

If you’re shopping for bras in the US, use the US Bra Size Chart. This will help you find sizes available locally and ensure compatibility with American brands. If you’re shopping in the UK, especially in stores or on UK-based websites, refer to the UK Bra Size Chart.