Before diving into the nitty-gritty of how to calculate your bra size, let’s get familiar with what these sizes really mean. A bra size is made up of two parts: the band size (the number) and the cup size (the letter). For example, in a size 34B, “34” refers to the band size, while “B” indicates the cup size. https://www.brasizecalculator.com/blog/how-should-a-bra-fit-4-point-assessment-to-quickly-identify-the-perfect-fit/