Critics clap back

Kelly went on to explain that she is currently navigating profound personal loss and emotional hardship following her father’s death, making the public scrutiny especially painful.

“I’m currently going through the hardest time in my life. I should not even have to defend myself. But I won’t sit here and allow myself to be dehumanized in such a way!”

But some critics framed their comments as concern rather than body-shaming.

“It’s not all body shaming, this is scary thin,” one user wrote, while another added,

“There’s a huge difference between body shaming and genuine concern.”

Why she is losing weight

Still, Kelly has made it clear that many comments crossed a line. Kelly — who shares son Sid, 3, with fiancé Sid Wilson — has always been vocal about people who leave “mean comments,” particularly other women.

Days before the BRIT Awards, Ozzy’s youngest daughter responded to a separate remark comparing her to a “dead body,” writing:

“Literally can’t believe how disgusting some human beings truly are! No one deserves this sort of abuse!,” Kelly wrote.

Kelly has repeatedly linked her recent weight loss to grief following her dad’s tragic passing in July 2025. The Black Sabbath frontman died from cardiac arrest but suffered from coronary artery disease and Parkinson’s disease.

In previous statements, Kelly has pushed back against speculation about her health and denied using weight-loss medications.

“I am ill right now. My life is completely flipped upside down,” she said late last year. “I don’t understand why people expect me to bounce back and look like everything is just fine in my life when it’s not.”

“The fact that I’m getting out of bed and facing my life — trying — should be more than enough.”

Sharon Osbourne, who had been married to Ozzy Osbourne since 1981, has publicly backed her daughter amid the backlash, saying the criticism ignores the reality of Kelly’s grief.

”She’s not happy, she’s lost her daddy,” Sharon said during a Dec. 10 interview with Piers Morgan.

“She can’t eat right now. It’s a shield for people that are unhappy, and jealousy and people’s perception of somebody else.”

Sharon herself has faced criticism over her own thinner appearance in recent years.

The 73-year-old has previously been open about her use of GLP-1 weight-loss medication, admitting that the rapid transformation became difficult to control and ultimately left her feeling “too gaunt.” She has since said she stopped using the medication and warned others about its risks.

“You can lose so much weight and it’s easy to become addicted to that, which is very dangerous,” Sharon previously said.