How many movies have Heidi Kabel and Ulla Mahrt acted in together?

They have worked on 5 movies together! Their first movie together was Ohnsorg Theater - Mutter steht ihren Mann (1963) while their highest rated movie together was Otto und die nackte Welle (1968). They have not worked together since Ohnsorg Theater - Frau Pieper lebt gefährlich (1975). They are most known for their comedy films together.