36A and 34B — they're both technically a B cup. They're called Sister Sizes (similar, but not the same!). Here's a quick…

Bra Sister Sizes Why Different Bra Sizes Fit the Same Woman

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Sister Sizing is an alternate bra size. Simular but not the same. 32c ,34b , 36a are Sister sizes.

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

What is the difference between 32C and 34B bra sizes? - Quora

Understanding Sister Sizing to Find the Perfect Sports Bra Fit

My bra isn't fitting right. It is wireless, and a 34B. The center isn't flat on my chest, and the back rides up slightly, but I spill out of a 32B. What

Understanding Sister Sizing to Find the Perfect Sports Bra Fit

Bra Sister Sizes + Sister Size Chart

Understanding Bra Sister Sizes