Kelly OsbourneKelly Osbourne became addicted to Vicodin by the time she was 17, she has revealed. In her new book 'Fierce,' Osbourne reveals she was prescribed the pill and was soon taking up to 50 tablets a day because it gave her the confidence to cope with the new-found fame during filming of MTV's 'The Osbournes.'

"By this point I was waking up and emptying six Vicodin into my hand. Soon I was taking 50 pills a day. Most people would overdose on 10. My friends called me 'Noddy' because I fell asleep all the time," she said.