Antonelli founded her eponymous fashion house in 1930. In July 1951, together with other designers such as
Vincenzo Ferdinandi,
Roberto Capucci, the Atelier Carosa, Giovannelli-Sciarra, Polinober,
Germana Marucelli and
Jole Veneziani, she took part in the show organised by
Giovanni Battista Giorgini in Florence that attempted to establish Italian fashion as a rival to France. Her designs have been described as having "minimalist silhouettes which pre-empted the 60s trend". She dressed the actresses
Clara Calamai,
Anna Magnani, and
Alida Valli. In 1969, she took part in the
Mare Moda festival, where her models were described by
Antony King-Deacon of
The Times as "thrashing about with their arms and legs in a sort of frenzied apathy. On they ran, harem-scarem, wiggle, scream, and they were gone." ==Death and legacy==