Bra sizes seem straightforward enough. The band size indicates your chest measurement, while cup size indicates the size of your breasts. But since there are two numeric measurements (and eventually a letter!) involved, bra sizes can be more confusing than other garment sizes. With both band and cup sizes to take into account, you may not know how to determine your own bra size or what those numbers even mean. Let’s go through a basic rundown of what band and cup sizes are, and an easy way to calculate your own bra size.

What is a Band Size?

The band of your bra is arguably the most important component of the bra itself. Your bra band provides the majority of the support, so wearing the correct band size is crucial for a great fit. There are two ways to take your band measurement: either directly above your bust or directly underneath. At Glamorise, we measure band size directly above the breasts. This may seem counterintuitive but don’t worry — taking the measurement above the bust means the number you get is simply rounded up to the nearest whole even number, which becomes your band size. You’ll then use this band size measurement along with your cup size measurement to find your bra size.

What is a Cup Size?

Cup sizes are where determining your bra size can get confusing. Cup sizes are indicated with letters that correlate to the inch difference between your band size and the measurement across the fullest part of your bust (i.e., your cup size). You determine your cup size by taking your bust measurement, which means measuring across the fullest part of your bust. Next, you calculate your cup size by subtracting your band measurement from your bust measurement. The inch difference is your cup size. So, to break it down simply:

…and so on. To make things even simpler, Glamorise has an easy Bra Size Calculator that you can simply plug your band and bust measurements into to get your bra size. It’s as easy as that! You can find our Size Calculator here.

If you’re still not sure how to measure your bra size, don’t hesitate to reach out with any questions or concerns. Our fit specialists are happy to help you find your perfect fit. You can contact our team here.

Author: Maeve Gesualdi
Last updated on: 1/20/22
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