Ganni Girls Like to Have Fun

The Reffstrups took over the small cashmere brand, founded by Frans Truelsen, in 2009. At the time, Ms. Reffstrup was a buyer in Copenhagen and felt boxed in by the stereotypes of cold androgyny or flower-crown-wearing bohemian that defined Scandinavian style. Mr. Reffstrup was a former tech executive who had raised capital to introduce artificial…