Born in Grantham, Lincolnshire, to Sicilian parents who emigrated to Britain in the 1950s, Berardi set on a design career early. After Lincoln College of Art and Design he assisted John Galliano, then in 1990 was accepted — on his third application — to Central Saint Martins, into the programme led by Wendy Dagworthy.
His influences run from music and independent film to Catholic symbolism, Italian art and the female form: in Milan in 2003 he showed a coat lit with bulbs that formed a crucifix, and he designed the trompe-l'oeil corset dress Gwyneth Paltrow wore to the 2008 premiere of Two Lovers, named Harper's Bazaar's 'Dress of the Year' for 2009. He shows at London Fashion Week, having also shown in Milan and Paris.