Laszar was born Cristine "Christel" Lazarus in Ortelsburg, East Prussia, Weimar Germany (Szczytno, Poland).
She was educated at the West-Berlin Max Reinhardtstageschool and began her career at the Renaissance-Theater (Berlin), the "Die Stachelschweine" and the Munich "Schaubude".
She also appeared at the Volksbühne Berlin (East Berlin). Laszar appeared in several movies of the DEFA. In the early 1970s she worked at the Deutscher Fernsehfunk and retired for health reasons in the 1980s.