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Knowing bra sister sizes is helpful when you need to go from one brand to another. With sister sizing, you can keep your cup volume by adjusting the band sizes.
![](https://hips.hearstapps.com/hmg-prod/images/bra-measuring-1569272779.png?crop=0.888888888888889xw:1xh;center,top&resize=1200:*)
How to Measure Your Bra Size: Bra Band and Cup Measurement Chart
![](https://ourfashiongarden.com/wp-content/uploads/2022/06/escotes-2-menos-calidad-1500x800.png)
How to Find Your Bra Size: The Easy Guide - Our Fashion Garden
![](https://clvblog.gumlet.io/blog/wp-content/uploads/2019/07/10-Benefits-of-Wearing-A-Well-Fitting-Bra1349x508-Slider-1.jpg?compress=true&quality=80&w=400&dpr=2.6)
Fitted to perfection- 10 Benefits of Wearing A Well-Fitting Bra!
![](https://cdn.shopify.com/s/files/1/0565/6254/8868/files/holding-bra-on-pink-background-828x600.jpg)
Understanding Bra Sister Sizes
![](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 Sizes & Equivalent Bra Size Chart – ThirdLove
![](https://cdn.shopify.com/s/files/1/2964/7474/files/what-your-bra-hooks-tell-you-about-your-bra-sister-size_1024x1024.png?v=1621964445)
Bra Sister Sizes + Sister Size Chart
![](https://hauteflair.com/cdn/shop/articles/36c_Bra_Cup_Size_cosabella-strapless-bras-32b-nude-cosabella-marni-strapless-bra-28194134425646_2_1600x.jpg?v=1687305415)
34C Bras: Equivalents Bra Cup Size, Sister Sizes and Boobs - HauteFlair
![](https://cdn.shopify.com/s/files/1/0163/8946/files/bust_ratio_1024x1365_57093bc5-dddc-498e-a6ce-431579b3dff3_600x600.jpg?v=1568038393)
Bra Sister Sizes: Why Every Woman Should Know for Bra Fitting
![](https://cdn.shopify.com/s/files/1/0565/6254/8868/files/woman-in-black-bra-828x600.jpg)
Understanding Bra Sister Sizes
![](http://www.brasandhoney.com/cdn/shop/articles/I_ve_gained_weight_and_now_my_bra_doesn_t_fit_1200x1200.png?v=1628197373)
I've Gained Weight And Now My Bra Doesn't Fit, NOW WHAT?? – Bras & Honey USA
![](http://www.freshpair.com/cdn/shop/articles/iStock-537790109-845x474_600x.jpg?v=1566485395)
How to Determine Bra Size, Bra Fitting
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Bra Sister Sizes + Sister Size Chart
![](https://images.amplebosom.com/stock/full/img040825.jpg)
What Are Sister Bra Sizes?
![](https://upload.wikimedia.org/wikipedia/commons/thumb/9/94/PostureFoundationGarments07fig5.png/1200px-PostureFoundationGarments07fig5.png)
Bra size - Wikipedia