How many movies have Katharina Müller-Elmau and Vivian Naefe collaborated on?

They have worked on 4 movies together! Their first movie together was Männer häppchenweise (2003) while their highest rated movie together was Der Bulle und das Landei - von Mäusen, Miezen und Moneten (2014). They have not worked together since Chaos-Queens - Ehebrecher und andere Unschuldslämmer (2018). They are most known for their comedy films together.