How many movies have Gina Janssen and Karin Lorson acted in together?

They have worked on 4 movies together! Their first movie together was Teenage Games (1976) while their highest rated movie together was Campus Teasers (1976). They have not worked together since Funny Boys und Funny Girls (Die amourösen Abenteuer zweier Freunde) (1984). They are most known for their comedy films together.