 In 2012, Guinness starred in Shakki, a short sci-fi fiction directed by Julien Landais.In 2017 Guinness starred in ‘The Aspern Papers’, a film inspired by letters between romantic poet Jeffrey Aspern and Juliana Bordereau directed by Julien Landais.Guinness currently writes with friend and music collaborator Malcolm Doherty

In 1985, when she moved to New York City, Guinness came to know Andy Warhol, for whom her sister Catherine had been a personal assistant for many years.