Kelly Osbourne appears “so thin” in 2025 due to a mix of long‑term weight‑loss surgery , lifestyle changes , and recent grief‑related appetite loss following her father Ozzy Osbourne’s death in 2025.

What changed her body over the years

  • In 2018 , she had gastric sleeve surgery , which permanently shrinks the stomach and limits how much she can eat; she later said it helped her lose about 85 pounds and also reduced emotional and addictive eating.
  • She combined the surgery with regular exercise , cutting sugar and refined carbs , and focusing on more nutritious food , which helped her keep the weight off for years.

Why she looks especially thin in 2025

  • After Ozzy’s death in July 2025 , Kelly has said she’s been struggling to eat and has lost even more weight; her mother Sharon Osbourne has noted that grief has severely impacted her daughter’s appetite.
  • In late 2025, Kelly publicly pushed back against critics who accused her of being “too thin” or using drugs like Ozempic, explaining that her current thinness is largely due to grief and appetite changes , not a new medication.

Forum‑style takeaways (trending topic)

  • Many fans and forum commenters now frame her thinness as the result of:
    • Past bariatric surgery and lifestyle overhaul.
* **Recent emotional stress and loss of appetite** after Ozzy’s passing.
  • Others argue that public obsession with her weight , whether “too fat” or “too thin,” reflects a broader fat‑phobic and appearance‑obsessed culture , which Kelly herself has called out.

Information gathered from public forums or data available on the internet and portrayed here.