Joan Didion is branching out: The beloved 80-year-old novelist is the face of Céline’s Spring 2015 campaign.Joan Didion is the star of Céline's spring campaign: http://t.co/Qkfp3LbPnB pic.twitter.com/WED4x5q6eR— Harper's Bazaar (@harpersbazaarus) January 7, 2015The luxury line has released the first image of its newest model, shot by Juergen Teller. In it, Didion looks simple and stylish, wearing oversized sunglasses, a black turtleneck, and a gold pendant.