Kelly Osbourne has strongly defended her late father, Ozzy Osbourne, against remarks made by Twisted Sister frontman Dee Snider. Snider suggested on the social media platform X that Ozzy Osbourne consistently had others, including bassist Bob Daisley and the late Motörhead frontman Lemmy Kilmister, write his songs.

In a series of posts on her Instagram Story, Kelly Osbourne stated that her father's legacy as a musician, songwriter, singer, and bandleader speaks for itself. She asserted that his friends, collaborators, loved ones, and millions of fans recognize his contributions and that his legacy will endure.

Directly addressing Snider, whom she called "spectacularly classless" and "irrelevant," Osbourne criticized him for attempting to diminish Ozzy's achievements posthumously. She argued that Snider cannot claim to understand the private realities of her father's life based on external observations or hearsay from individuals with grievances.

Osbourne contrasted Snider's career with her father's extensive musical career, which spanned nearly six decades. She noted that Ozzy helped define heavy metal with Black Sabbath and built a significant solo career, with his music continuing to influence future generations. She questioned whether Snider's comments were an attempt to regain relevance, suggesting the music industry had moved past his commercial peak decades ago.

By contrast, she maintained that her father's "name, catalogue and influence still remains globally relevant." Osbourne concluded her statement by thanking Snider, suggesting his comments revealed his own desperation and highlighted the vast difference in their enduring legacies and his lack of relevance in the music industry and society.

Ozzy Osbourne died in July 2025 at the age of 76.