While pinpointing the single most common female breast size globally is difficult, the average breast size in America is reported to be a 34DD. This figure, however, represents an average and doesn't necessarily reflect the most frequently occurring size. Various factors influence breast size, including genetics, age, weight, and hormonal changes.
It's important to note that the provided references focus on different aspects related to breasts, such as breast cancer prevalence (which is the most common cancer diagnosed in women in the US, not necessarily related to size), benign breast lumps (fibroadenomas being most common in younger women), and breast implant sizes (which are a surgical choice and not a reflection of naturally occurring sizes). The provided link related to "Most common bra deals size" does not offer specific data to answer the question.
Therefore, while a 34DD is often cited as the average in America, it's crucial to understand that this is a statistical average and not necessarily the most frequently occurring size. More comprehensive global data would be needed to definitively answer what the most common size worldwide is.
