Kelly Osbourne shares touching moment with her father in which they can be seen singing and dancing together, as she continues to mourn his death.

Kelly Osbourne has paid a moving tribute to her father Ozzy who died just four days ago. The Black Sabbath singer nicknamed the Prince of Darkness, died on Tuesday at the age of 76, just weeks after he took to the stage for his final show with his band.

Kelly broke her silence on her father's death Thursday, telling her followers she "lost the best friend [she's] ever had."