By the end of the decade, styles, markets, materials, demographics, inspirations and the very definition of fashion had been transformed. The young generation wanted informal but stylish clothes, and self-expression was paramount. 'Fashion' had given way to 'style'. Jonathan Walford charts these revolutions, from London's mod 'youthquake' to the yé-yés in Paris via the flower children and Afro movement in the US, and shows how a new internationalism changed the fashion landscape, as London, New York, Florence, San Francisco, Hong Kong, Madrid and Rome challenged the dominance of Paris haute couture.