Kelly Osbourne calls her father Ozzy's death "the hardest moment of my life" in an emotional Aug. 4 Instagram Stories post days after his funeral in Birmingham, England. The Black Sabbath frontman died on July 22 at 76.

Kelly Osbourne is grateful for fans’ support in the wake of her dad Ozzy Osbourne’s death. “I've sat down to write this a hundred times and still don't know if the words will ever feel like enough