She also starred in two adult hardcore films produced by Academy Award-nominated filmmaker Lars von Trier's company Zentropa: Constance (1998) and Pink Prison (1999). In 2002, Katja changed her stage name from "Katja Kean" to "Katja K". Katja had a prominent role in the Danish sitcomLangt fra Las Vegas (Far from Las Vegas). She sang with Danish musician Dario Campeotto on his single "Save Your Love". She also appeared on a Filur track called "Sunset Boulevard". She owned an underwear company, which in 2009 went bankrupt. Author Henrik List wrote a biography (based on interviews with her) titled Katja KXXX – Stjerne I Syndens By (ISBN 9788779730533).