Just after World War II ended, Carmen de Tommaso, a French-born who originally studied architecture and interior design, opened a couture house with the aid of three businessmen friends who had happened to have been war prisoners together. Ailed by her minute size, what we call 'petite" nowadays, de Tommaso had the idea to cater to women who also had a comparable figure. To inflect her brand with a more Parisian (rather than Andalusian) flair, as her base of operations was Paris, Carmen, like Charles Revson (of Revlon), substituted a letter in her name and became Mademoiselle Carven ever since.
What made for the success of this couture house, one among many starting in the mid-20th century Parisian landscape, such as Dior, Piguet, or Balmain? Simple, original ideas and the proper dose of marketing.
Please refer to this link to read my article on the History & Vintage Fragrances of the French company parfums Carven.