Like Tyra Banks says, perfect is boring, and birthmarks, big or small, are a key part of your natural beauty and what makes your appearance yours. To inspire you to accept your “imperfections,” we’re looking at celebrities who have embraced their facial birthmarks and have no fear in rocking. A birthmark is a congenital, Birthmarks are caused by overgrowth of blood vessels, is generally accompanied by the presence of large facial hemangiomas. The different types of birthmarks include pigmented and vascular birthmarks. Learn about birthmark removal, causes, treatment, and associated problems.