Nilsson has also starred in several plays and competed on a Swedish game show. After playing Pippi Longstocking she trained to be a medical secretary but decided to keep acting. Nilsson won a TP de Oro award in 1975 for Most Popular Personage for Pippi Longstocking. She reportedly earned less than $50,000 for her work in all of the Pippi movies, after signing a very bad contract. Today she works as a secretary in Stockholm.