Kelly Osbourne, who is meant to be celebrating her engagement, recently opened up about her father's heartbreaking passing.

The Black Sabbath frontman was considered one of the most legendary rockers, called the "Prince of Darkness," and delivered his farewell show with the band's original lineup just two weeks ago in the United Kingdom.

Kelly Osbourne said she has lost her “best friend” following the death of her father, Black Sabbath frontman Ozzy Osbourne. The rock legend was diagnosed with Parkinson’s disease in 2019 and died at the age of 76 on Tuesday morning, surrounded by his family.

Kelly Osbourne paid tribute to her late father, Ozzy Osbourne, by sharing a special version of the Black Sabbath song Changes. She called him her "best friend.

Kelly Osbourne has released a statement following the death of her father Ozzy, saying she “lost the best friend I ever had.”