What's a sister size to 30D/DD? most shops don't carry band size

Butterfly Collection Blog - Life in Big Boobs: Bra School: Not all D cups are the same size

Why do brands think if you have a small band size you can't have big boobs? They literally make H cups for bigger bands. : r/bigboobproblems

Sister Sizing De-Mystified! – Playful Promises USA

Bra Making: What is Sister Sizing? • Cloth Habit

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

Everything You Need to Know About Bra Sister Sizes - The Melon Bra

How UK and US bra sizes compare… – Curvy Kate US

What is a DD exactly?

Visual Bra Size Chart & Fit Guide, Bra Sizes Chart