How many movies have Enid Blyton and Hannelore Elsner collaborated on?

They have worked on 3 movies together! Their first movie together was Hanni & Nanni (2010) while their highest rated movie together was Hanni & Nanni 2 (2012). They have not worked together since Hanni & Nanni 3 (2013). They are most known for their comedy films together.