Article continues below advertisementDiane Keaton's son, Duke, was seen for the first time following the heartbreaking loss of his mother.On Sunday, October 12, the 25-year-old was photographed leaving the late actress' Los Angeles home - just one day after she passed away at 79. Dressed in all black, Duke looked somber in a sweater, pants and sneakers. Around his neck hung layered silver cross necklaces, a touching nod to his mother, who was often seen wearing similar fashion pieces with her signature hats.