The term ‘sister size’ is a technical term often used in the lingerie and bra industry and we bet you’ve heard it a lot but don’t really know what it means.
Bra Sister Size Calculator - Cuddl
Find your perfect fit with sister sizing
Everything You Need to Know About Bra Sister Sizes - The Melon Bra
Explaining Bra Sizes - What are Sister Sizes? :: Beauty and Clip in Hair Extensions News - Undercover Glamour
What is my bra size?
Bra Sister Sizes
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Bra Sister Sizes + Sister Size Chart
Size chart – Her own words