After studying theater and scenography, Mari David began her fashion design training at Atelier Chardon Savard in Paris and made her first classes with Catherine Baba. She pursued her apprenticeship at the Paris office of Vogue Italy while assisting Sara Maino and Giovanna Battaglia consecutively for several years.

Mari has since collaborated with prestigious magazines, such as Vogue russia, Vogue Taiwan, W Magazine among others. She also gives a great importance to the independent press with which she has established a long-term collaboration. Brands such as Cartier, Swarovski, Each x Other or Lacoste collaborate with her with for their campaigns and look books.