Kelly Osbourne has blamed her rocker father Ozzy for her drug problems - because "addiction is in your genes".

The 24-year-old has long struggled with prescription painkillers and her habit landed her several stints in rehab, before she finally kicked the pills this year.

And the reality TV star is adamant her problems stem from the Black Sabbath frontman, who spent years battling drink and drug addiction.

She says, "I don't have any shadow of a doubt that addiction is a disease. It's in your genes. The only people in my family who don't have that gene are my mum and my sister Amy."