Kelly Osbourne has been especially known for losing a staggering amount of weight in recent years.
"The Fashion Police" star credits her vegan chef boyfriend, Matthew Mosshart, for helping her lose the last few vanity pounds.
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"Over the past two years, I've lost over four-and-a-half stone (63 pounds) -- but I've only lost the last stone since I met Matthew," Osbourne told the Daily Mail.
"That's because he cooks for me! He's a vegan chef, so he makes sure that I eat healthily."
Kelly's diet, once filled with dairy, meat and fast food, is now comprised of vegetables, fruit, nuts and seeds, the newspaper said.
The E! News fashion correspondent also underwent a grueling exercise regime.
"I'm happy with how I look now. As long as I'm healthy, do exercise and eat right, that's the main thing. I'm slim now, but I don't want to be anorexic," she told the Mail.
"I love Matthew and we love to work out together -- we motivate one another. I go on the treadmill every day for half an hour and do two hours of exercise if I have a special event."
Osbourne claimed that her lifestyle with Mosshart has made her the healthiest she has ever been.
Having recently posed in a several bikinis for the latest issue of Cosmopolitan Body UK, showing off taut abs and a slim figure, Osbourne admitted that she had to come to terms with herself first before she was able to lose weight.
“People think I lost weight and that’s what made me happier. That’s not true; I had to learn to love myself first,” she told Cosmo Body UK.
“Losing weight was just one benefit of putting the hard work in and sorting myself out on the inside first through therapy. That was one of the scariest times of my life. I swear I’ve never felt more naked, because I had to actually be me and couldn’t mask it.”