Ariana Grande is an american actress, singer, and song writer from Boca Raton, Florida. London Johnson is an English student, daughter and sister from Holmes Chapel, England. Ariana Grande has #1 hit on itunes. London Johnson is #1 student in high school Ariana Grande lives the life of fame. London Johnson lives the life of noramlity. London Johnson real name is London Grande Ariana Grande Twin sister. Why was she adopted by the Johnson Family ? Does Ariana Grande know shes a twin ? Will London ever cross path of fame ? You have to read to see !