Photo: Victor Boyko/Getty Images A few hours before Kristen Stewart’s directorial debut, The Chronology of Water , premiered at Cannes, she sat down with actress and ex–Sonic Youth singer Kim Gordon, who co-stars in the film, at Hyde Beach. The event was hosted by Breaking Through the Lens, which provides financing and support to female filmmakers, and called for “Cannes Beach Chic” attire, a mysterious code that some interpreted as jeans, others as sundresses, others as athleisure, and others