Lily Allen proudly showed hers off on television, Mark Wahlberg’s famous for his and just last week, Zac Efron was forced to deny he has two. But a 22-year-old woman has trumped them all – by growing a full-sized extra nipple on the sole of her foot. Although one in 50 women and one in 100 men have extra nipples, according to the California-based Dermatology Journal it’s the first time one has ever been discovered so far down somebody’s body. The woman told doctors she had had the unusual growth – which is almost two inches wide – all her life, and it had never caused her any pain. Between one and five per cent of the population have the condition, known as supernumerary breast tissue.