After studying theater and scenography, Mari David began her fashion design training at Atelier Chardon Savard in Paris and 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 recognized magazines, such as Vogue Italy, 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 or Lacoste collaborate with her with for their campaigns and look books. In 2024, surrounded by renowned artists, she published a confidential and independent fashion publication, printed in only 300 copies, entitled "Camping", where she explores our relationship to the camp from every angle.