Paris Hilton is extremely sad after learning the news of fellow socialite Casey Johnson’s death. "I am devastated to hear this news. I've known Casey since I was a baby. "She had a big heart and she was a good friend. I feel so sad, I don't want to believe it. My condolences go out to her family and loved ones." The Johnson & Johnson heiress, 30, was found dead in her Los Angeles mansion yesterday morning (January 4) Paris’ sister Nicky was godmother to the socialite's adopted daughter, Ava, 3.