A Brazilian woman has used her unique facial birthmark to launch her modelling career. Mariana Mendes, 24, was born with congenital melanocytic nevus, a type of birthmark that occurs in an estimated one percent of infants worldwide. Mariana’s unmissable birthmark covers the centre of her face and, while many struggle to accept their birthmarks, Mariana has always fully embraced hers and encouraged others to do the same.