What is the smallest to biggest bra sizes?

Bra sizes typically start with smaller sizes like AA and A, progressing to B, C, D, and then larger sizes such as DD, DDD (or E), F, G, and beyond. The band size, which is the number before the cup size, also increases, leading to sizes like 32A, 34B, and so on. As a result, the smallest common size is often 30AA or 32A, while larger sizes can go up to 50G or more, depending on the brand and style. It's important to note that sizing can vary significantly between different manufacturers.