La Fountain was born to a French American father and a Finnish mother, after they had met during the 1980 Winter Olympics in Lake Placid, New York. Her mother is an artist and her father runs a family business, managing a restaurant and a hotel in New York. After her parents separated, La Fountain moved to Finland with her mother, who then married Kosti Kuronen, the Finnish architect, who has designed around 50 golf courses in Europe.
