Malgorzata Zajaczkowska began her acting career in 1979, on stage in the Teatr Narodowy. She moved to the United States 1981 and Americanized her name as Margaret Sophie Stein. Her American film credits include Bullets Over Broadway (1994), Enemies, A Love Story (1989), and Simply Irresistible (1999). She moved to back to Poland in 1999 where she continues a career in acting. She has also lectured at the Warsaw Film School.