Sarah Paulson is grieving the tragic loss of Diane Keaton. During the red carpet for the premiere of her new show All's Fair in El Lay on Thursday, the actress teared up as she opened up about her friend and former co-star's passing for the first time. The pair met while working on The Other Sister in 1999 and remained close over the years. Diane's death hasn't been easy for Sarah, and she struggles to even speak about it now. When asked about the tragedy, she told Access Hollywood: "She was a very dear friend of mine. It's not something I'm able to talk about yet.