Marianne Westman is considered one of Sweden's leading designers in household porcelain. After studying at Konstfack, she got permanent employment at Rörstrand's porcelain factory, where she developed the porcelain series "Mon Amie" and "Picknick" – now considered modern classics.

For a few years in the 1970s, Marianne Westman worked at Skruf's glass factory, where she made the "Provence" cheese trays and the "Le Chef series". Between 1972 and 1993, she freelanced at various porcelain factories in Bavaria, Germany, and made the "Kristina" and "Falun" tableware.