United Kingdom, March 23 -- Kelly Osbourne is determined to be the "best version" of herself after suffering a health scare in 2024.

The 40-year-old star and her two-year-old son, Sidney, battled respiratory syncytial virus, breathing problems and days-long fevers in late December, and Kelly has now revealed how the health scare has changed her outlook.

The reality star - who has Sidney with her boyfriend, DJ Sid Wilson - told PEOPLE: "There's health scare after health scare and you have to sit there and you have to realise what is real, what is not, what is important, what is healthy, and what makes you feel the best version of yourself. And that's what I work toward, is always trying to just be the best version of me."

Sid experience...