How many movies have Marga Bult and Sonja Visser collaborated on?

They have worked on 2 movies together! Their first movie together was Sinterklaas en het raadsel van 5 december (2011) while their highest rated movie together was Sinterklaas en de Pepernoten Chaos (2013). They have not worked together since Sinterklaas en de Pepernoten Chaos (2013).