Kelly Osbourne reveals she was hooked on narcotics at the age of 16 and at her lowest point, she swallowed 100 pills a day, Digital Spy reports.

'All the voices in my head that were telling me that I was worthless, that I was fat, that I'll always just be someone's daughter and never make anything for myself…all these things in my head, as soon as I took this pill, just silenced,' she explained on US show 20/20 Hollywood High.

'I didn't like the person I was, so I took drugs.'

'I remember one night being woken up by my mom punching me in the back so that I started breathing again in bed, and I had pissed myself in my sleep,' she recalls.

'I'm sorry, but at 20 years old, to wake up by your mother trying to resuscitate you in a bed of your own piss, that is mortifying.'