Kelly Osbourne was once so hooked on drugs, she underwent cosmetic surgery just to get her hands on painkillers.

The pop star daughter of Ozzy Osbourne began experimenting with drugs when she was 13 and was a "full-blown addict" by the time she became a reality TV star in her family's show The Osbournes.

And the 24 year old admits she was so desperate to get her fix, she had surgery on her lips to get more drugs.

She says, "My dad got a nose job so he could get drugs. I used my dad's f---ing tricks. I found a plastic surgeon and had collagen in my lips so he could give me painkillers. I looked f---ing ridiculous."

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(This news article provided by World Entertainment News Network)