Career
She is a former child actress. She is primarily known for her portrayal of Pippi Longstocking in the Swedish-produced television series of the same name during 1969 which was compiled, re-dubbed into Dutch and later also in English, and released as two feature films in 1969. In 1970, she reprised her role of Pippi in two subsequent feature films.
She currently works as a secretary in Stockholm, occasionally taking small stage roles.
In 2000 the Swiss director Xavier Koller convinced her to take a role in his film Gripsholm, based on a novel by Kurt Tucholsky. In 2007 she appeared on the German television-channel ZDF as the forensic pathologist Ewa in the television-series ”Der Kommissar und das Meer” (English: The Commissioner and the Sea).
In 2009, Nilsson was a celebrity contestant on Kändisdjungeln.