Sober girlfriend Kelly Osbourne

LOS ANGELES: Kelly Osbourne says fiance Luke Worrall has turned her into a ''better person'' and helped her give up alcohol.

Kelly Osbourne gave up alcohol for fiance Luke Worrall.

The presenter - who got engaged to the model in March 2009 - stopped drinking altogether once she met Luke and believes he has made her a "better person".

She said: "He's turned me into a better person. He really has. I didn't care before I met Luke. I was out every night, drunk. I didn't have somebody to be a better person for and then that all changed when I met Luke."

The 25-year-old star is now completely teetotal because she doesn't trust how she might behave after she's had a few drinks.

She explained to more! magazine: "I don't drink at all. Even a glass of wine at dinner would probably mean me going home, getting s**t-faced and then being on drugs and doing something stupid that I have to spend the next three months apologising for.

"I don't like drinking that much as I hate throwing up and the taste of alcohol. I'd look at somebody who has a half-empty glass in front of them and think, 'How can they leave that?' whereas mine, it's like 'Glug' and it's gone. 'Can I have another one? I'll be alright.' "

Kelly is so focused on staying sober she does her best to stop herself from being around alcohol as she doesn't want to be tempted.

She explained: "In the culture in England it's hard to explain to people you don't want to drink, as they look at you like you're feeling crazy. There have been times the hotel I'm staying in has sent up three bottles of champagne and I send them back. What am I going to do with it staring at me in a bucket? I don't want it."

Kelly has been in rehab three times, most recently to seek help for a dependency on prescription drugs.