What's a sister size to 30D/DD? most shops don't carry band size 30, so I'm wondering what an alternative size to mine would be, so I can buy bras locally : r/ABraThatFits

Sister Sizes: The Bra Secret Every Person Should Know – Sister Sizes & Equivalent Bra Size Chart – ThirdLove

Bras: What is Sister Sizing? Bra Sizing Explained by Kimmay

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How to Sister Size your Bra Pattern - Emerald Erin

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What Are Sister Bra Sizes?

Hello, FFA! I'm a bit new to this sub, but I noticed many of you are in ill-fitted bras. : r/femalefashionadvice

What Are Sister Bra Sizes?

Weekly] General Discussion/Small Questions Thread : r/ABraThatFits