Kwiatkowska started acting at the Juliusz Słowacki Theatre. Her first performance was "Król Duch" ("King Ghost") in 1941. During the Nazi occupation of Poland, Kwiatkowska and Wojtyla acted together at the underground . Kwiatkowska later worked at the Powszechny Theatre until 1947, when she joined the Kraków Theatre. In 1954, she acted in "The Cherry Orchard" at the National Stary Theatre in Kraków. In total, she played 64 different roles in theatre productions in Kraków. Kwiatkowska starred in nine films, including "Ashes and Diamonds" in 1958, "The Doll" in 1968, and the 2007 German film "And Along Come Tourists".