CANNES, FRANCE - MAY 23: Actress Sienna Miller attends the 'Macbeth' Premiere during the 68th annual Cannes Film Festival on May 23, 2015 in Cannes, France. (Photo by Ben A. Pruchnie/Getty Images)
CANNES, FRANCE - MAY 23: Actress Sienna Miller attends the 'Macbeth' Premiere during the 68th annual Cannes Film Festival on May 23, 2015 in Cannes, France. (Photo by Ben A. Pruchnie/Getty Images)