How many movies have Christine Kaufmann and Maria Theresia Wagner collaborated on?

They have worked on 3 movies together! Their first movie together was Weihnachten mit Willy Wuff (1994) while their highest rated movie together was Weihnachten mit Willy Wuff II - Eine Mama für Lieschen (1995). They have not worked together since Höllische Nachbarn (1998). They are most known for their comedy films together.