Creativity Joan Didion, 80, Is the Star Model in Fashion Brand Céline’s New Campaign For those who aren't into Bieber's CK adsBy Kristina Monllos|January 7, 2015 Share By Kristina Monllos|January 7, 2015 Share Lit nerds and fashionistas alike adore Joan Didion, so it only makes sense that French fashion brand Céline has anointed the 80-year-old author as its latest poster girl. Donning her famous oversized sunglasses, Didion exudes cool, causing fashion magazines and bloggers to rejoice. She is certainly no Justin Bieber. Didion is known for her sometimes reclusive nature, but lately she has been (and will be) a more accessible figure: Her nephew Griffin Dunne, star of Scorese's After Hours among many other films, has made a documentary about her life. Could this be the beginning of a Didion-aissance? Adweek Adweek