After having worked for several years in the fashion industry, for houses such as Vanessa Bruno, Christian Dior, Scotch&Soda and Tommy Hilfiger, Nienke launched her own label in 2015. On a freelance basis she now works for different clients in the fashion and interior industry, and has created a boutique collection of wallpaper and fabrics called Hella Idún (2018).
In 2015 the label The Marching Hare was founded. Out of her love for illustration, nature and animals a small range of luxury birth posters and cards were made, as well as ceramic birth plates. The plates are hand painted by Nienke in her work studio in Leiden.