Tan Giudicelli was born in French Indochina to a Vietnamese mother and a Corsican father. He first arrived in Paris in 1956, where he made his fashion debut designing for Christian Dior.
After leaving Dior, Giudicelli had a short stint designing under Jules François Crahay at Nina Ricci, later designing under Jacques Heim, before taking a job at Chloé in 1962. There, he contributed to the modernisation of the maison, working alongside the likes of Christiane Bailly, Maxime de la Falaise, Graziella Fontana, Gérard Pipart, Michèle Rosier, and Karl Lagerfeld.
He left Chloé in 1964 for the launch of Mic Mac St Tropez, a line of leisure wear he conceived with Brigitte Bardot and her husband Günter Sachs. Giudicelli’s collections for Mic Mac had strong asian influences, as did those of his namesake label, the first of which he unveiled in 1972. Giudicelli also gained notice for his surrealist designs in the early days of his label. In 1974 he presented his couture collection, and in 1975 he released a diffusion line, T13. In 1988, Giudicelli joined the design team at Hermès, where he stayed until 2012. In his work, Tan Giudicelli melded his Vietnamese heritage with the French influences brought on by his time designing haute couture.