Kelly Osbourne, the famous daughter of rocker Ozzy Osbourne, is speaking out after his death. Kelly, 40, posted an Instagram story with a black screen and a broken heart emoji, accompanied by the text "I feel unhappy I am so sad. I lost the best friend I ever had."

Ozzy Osbourne died on Tuesday at the age of 76, less than three weeks after he sat on a throne on stage — not far from where he was born — and performed a final show with Black Sabbath.