His 2012 film , '' Something in the Air '' , was selected to compete for the Golden Lion at the 69th Venice International Film Festival . Assayas won the Osella for Best Screenplay at Venice . His 2014 film '' Clouds of Sils Maria '' was selected to compete for the Palme d'Or in the main competition section at the 2014 Cannes Film Festival . '' Sils Maria '' won the Louis Delluc Prize and garnered six César Award nominations including Best Film , Best Director , and Best Original Screenplay . The film won a César Award for Best Supporting Actress for American actress Kristen Stewart . In 2016 , Assayas won Best Director Award ( Cannes Film Festival ) for '' Personal Shopper '' , which also starred Kristen Stewart
69th Venice International Film Festival
69th Venice International Film Festival
Olivier Assayas