A beauty shot of English model Twiggy in Biba's new range of cosmetics, early 1970s © Justin de Villeneuve

American singer and novelist Marsha Hunt at the time of her appearance in the stage musical 'Hair', 1968 © Justin de Villeneuve

Twiggy poses with David Bowie for the cover of his 'Pin Ups' album, Paris, 1973 © Justin de Villeneuve

Twiggy and Patti Boyd. Photo shoot for Italian Vogue, Milan, 1972 © Justin de Villeneuve

Twiggy wearing a fitted satin evening dress in a promotional shot for Ken Russell's 'The Boy Friend', 1970 © Justin de Villeneuve

Twiggy wearing a a peasant-style dress in a promotional shot for Ken Russell's 'The Boy Friend', 1970 © Justin de Villeneuve