A 28DD is small. VERY small. Its sister sizes are 30C and 32A. A 42DD is

Explaining Bra Sizes - What are Sister Sizes? :: Beauty and Clip

Keep in mind stores don't label their sizes consistently (lucky us

What Are Bra Sister Sizes? – Harlow & Fox

How to Sister Size your Bra Pattern - Emerald Erin

Bra Sister Sizes + Sister Size Chart

True & Co. True Everybody Women's Adjustable Strap Scoop Neck Bra

If I have a band size of 26' and bust size of 31', what is my bra

International Bra Size Chart - Bra Size Calculator

Bra Sister Sizes + Sister Size Chart

Sister Sizing and Underwires

Sister Sizes, Bra Fit Guide & Size Charts

How to sew a bra that fits: A bra fitting guide for large busts