What do you call a girl with no boobs?

Justin Bieber.

Almost (but not quite) along similar biological lines as the boy born without a winkle.

This historic discovery occurred shortly after the birth of the first Queen Elizabeth, daughter of Henry VIII, in the 1500's. Fortunately, the drama was enacted by the BBC many years later, which is why we now all know that Elizabeth was a girl.:

https://www.youtube.com/watch?v=x98cE4QCrlk