Westermann grew up in Mannheim. After finishing her Abitur she did an editorial traineeship at and attended the Deutsche Journalistenschule in Munich. Starting in 1972, she worked as a freelance journalist for several radio and TV stations, produced films and reports and moderated the ' on ZDF. In 1983 she switched to WDR and moderated the ' until 2002, from 1987 on together with Frank Plasberg. Since 1996 Westermann has been moderating the show together with Götz Alsmann, in which an alternating famous "roommate" will be challenged with unusual tasks and games. Westermann and Alsmann called the format a "children's birthday party for celebrities“. For their work with Zimmer frei! the duo has been awarded with the Adolf-Grimme-Preis in 2000. Westermann also works as a host for the Germanradio stationWDR 2, where she presents - rotating with her colleagues - the Montalk and on Sundays the Buchtipp. In 2010 she was awarded with the German Radio prize in the category Best Interview.
Writer
In 1999 Christine Westermann published her first bookBaby, when will you marry me? - A novel from the jungle of relationships. One year later her second book I think he dropped. Stories out of the real life followed. In collaboration with she published the 2008 book Invitation for dance – a twosome story, a correspondence between two journalists.
Personal life
Between 1990 and 2000 Westermann had a secondary residence in San Francisco, where she worked as a freelance correspondent. During that time she shuttled regularly between the US and her workplace in Cologne. Since June 2000 Westermann has been married to corporate consultant Jochen Baller, who is also her agent. They live in Cologne.
Novels
Baby, wann heiratest du mich?, Kiepenheuer und Witsch, Köln 1999,
Ich glaube, er hat Schluss gemacht, Kiepenheuer und Witsch, Köln 2000,
Aufforderung zum Tanz, Kiepenheuer und Witsch, Köln 2008, - in collaboration with Jörg Thadeusz
Karneval. Bilder und Geschichten, Kiepenheuer & Witsch, Köln 2009, - in collaboration with Stefan Worring
Da geht noch was: Mit 65 in die Kurve, Kiepenheuer & Witsch, Köln 2013, .