How many movies have Anna Wildbach and Willi Montana acted in together?

They have worked on 4 movies together! Their first movie together was Alpensahne mit Piss (1989) while their highest rated movie together was Heidi 3: In der Heidi ist es doch am schönsten (1990). They have not worked together since Heidi: Auf der Heidi gibt's koa Sünd' (1990). They are most known for their comedy films together.