United Kingdom, Oct. 18 -- Sarah Paulson has paid an emotional tribute to her late friend and co-star Diane Keaton.

Following the Oscar-winning actor's death earlier this month aged 79, the actress spoke to Access Hollywood at the premiere of her new Hulu series All's Fair about the loss, with Sarah, 50, saying she was struggling to come to terms with the passing.

She said: "She was a very dear friend of mine, so it's not something I'm able to talk about yet. I'm not able to talk about it. But all I can say, and I have been saying tonight, which is important to me to communicate, is that what you thought she was as a performer, she was even more spectacular as a human being."

Sarah and Diane first met while filming the 1999 movie The O...