Someone who they call “The Afghan Girl” was put on the cover of National Geographic Magazine in 1985. No one knew who or where she was for 17 years. Sharbat Gula (The Afghan Girl) was found and again photographed by Steve McCurry after 17 years of not knowing her own fame around the world.
http://ngm.nationalgeographic.com/2002/04/afghan-girl/index-text