It all started as a fiction and ended as a fact.
In 1990, Arnold Schwarzenegger movie “Total Recall” there was a scene with the 3-breasted alien h00ker.
In reality it’s a rare condition called polymastia, , the condition of having an additional breast. Extra breasts may appear with or without nipples or areolae.
Some SUPERmamerary breasts might actually appear until puberty, that special time when a polymastic girl first starts to resemble a prostitute from a cheesy Sci-Fi movie.
Location varies, polymastia can manifest itself virtually anywhere on the front of the body, hopefully somewhere between the first and second b00b.
In History, Anne Boleyn, second wife to Henry VIII of England, was rumored to have a third nipple or even a third breast.This may well have been a slanderous rumour, as in Tudor times these “malformations” were a sign of a witch. The circumstances of her marriage to the king, who had divorced his first wife, made her a controversial figure.
I’m a firm believer in the Sci-Fi Science.