![](https://www.brastop.com/cdn/shop/articles/bra-fitting-ylenia_664x227.jpg?v=1597155745)
Bra sizing is complicated and can be tricky to get your head around at the best of times, but when things like 'sister sizing' is introduced it can get even trickier! No need to fear, we're here to help. Read on to learn what a sister size, how it works, and how to find your very own bra sister sizes!
![](https://www.evasintimates.com/Content/images/blog/UK-bra-sizes-K-cups---15-16.jpg)
British (UK) Bra Sizes in Inches and Centimeters
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Sister Sizes: The Bra Secret Every Person Should Know – Sister
![](https://cdn.shopify.com/s/files/1/0305/6249/files/sister_size_f436a91c-0bb4-440e-8fea-3321ca0f7194.jpg?v=1692231470)
Sister Sizes: The Bra Secret Every Person Should Know – Sister
![](https://cdn.shopify.com/s/files/1/0305/6249/files/sister_size_69cc67a3-c1a3-4126-aa99-bca3a9b8fd1c.jpg?v=1692231668)
Sister Sizes: The Bra Secret Every Person Should Know – Sister
![](https://www.thirdlove.com/cdn/shop/articles/SPR24_LS_STU_TSBRA_MOCHA_1398.jpg?v=1709312525&width=200)
Sister Sizes: The Bra Secret Every Person Should Know – Sister
![](https://www.brastop.com/cdn/shop/articles/celebrity-bra-sizes_664x227.jpg?v=1597312493)
Bra Sister Sizes Explained – Brastop UK
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Sister Sizes: The Bra Secret Every Person Should Know – Sister
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Sister Sizes: The Bra Secret Every Person Should Know – Sister
![](https://images.ctfassets.net/3zzevkhc8io9/4BZGjudZnqHL7KFN33ivVW/3929e9d47915d6f4fe869212556a0e7b/LINCHERIE_R_P_3DMirror_4.jpg?w=400&h=400&fit=fill)
Every bra size has a sister size: This is how it works
![](https://cdn.thewirecutter.com/wp-content/media/2024/02/sportbras-2048px-09014.jpg?auto=webp&quality=75&width=1024)
The 5 Best Sports Bras of 2024
Supportive Plus Size Bras For Women
![](https://fleurofengland.com/cdn/shop/articles/Kyra-Balcony-bra_200x.jpg?v=1698663018)
What is Sister Sizing? – Fleur of England