Just like her friend David Hockney, 87, who famously immortalised her in the 1971 painting Mr & Mrs Clark With Percy, when Birtwell was creating iconic prints for her designer husband Ossie Clark ...

Muse of David Hockney and wife and collaborator of Ossie Clark, Celia Birtwell has had a rollercoaster of a career, which has seen her go from the toast of the fashion world to obscurity and back ...