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.

In the wake of her late father Ozzy Osbourne’s death, Kelly Osbourne is thanking fans for their outpouring of support — and letting them know she “won’t be okay” for a while. On Monday, the Prince of Darkness’ youngest daughter, 40, shared a message on her Instagram story, writing, “from the bottom of my heart, thank you

The Black Sabbath frontman was laid to rest last week at his family’s 250-acre estate, Welders House, in Buckinghamshire