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

Kelly Osbourne is remembering her father, Ozzy Osbourne, with an emotional tribute that calls back to a special father-daughter moment. Two days after Ozzy died at age 76, Kelly shared lyrics from the Black Sabbath song "Changes," which she and Ozzy recorded as a duet together in 2003, to her Instagram Stories.