[1] Schuberth was called the "tailor of the stars", and his work was loved by many international celebrities like Princess Soraya of Iran,[2] Rita Hayworth, Ingrid Bergman, Bette Davis, Brigitte Bardot, Sophia Loren, Gina Lollobrigida and Anna Magnani.

[5][4] One of his hat clients was countess Ratti, a nephew of Pius XI, who suggested he open an atelier for women fashion serving the aristocracy.

[4] Early work from his fashion house he primarily offered knit separates ensembles for coastal vacations, and pared-down evening wear.

[4] The historic debut of Italian fashion happened on February 12, 1951, at Villa Torrigiani the Florence home of Giovanni Battista Giorgini, where Schuberth's apparel designs were in attendance.

In 1953, he founded with many famous fashion designers including Alberto Fabiani, Vincenzo Ferdinandi, Sorelle Fontana, Jole Veneziani, Giovannelli-Sciarra, Mingolini-Guggenheim, Eleanora Garnett and Simonetta Colonna di Cesarò, the S.I.A.M.