"The only reason I've lost weight is because I've been working," Contactmusic quoted her, as saying.
A healthier diet has also amounted to her slim down, she revealed to British magazine, Closer.
"My best tip is to get rid of your microwave. It's the easiest thing to chuck some three-minute meal in. If you don't have one, you'll pick up something fresh," she said.
For her the different fad diets were never the criteria for losing weight.
"I don't ever want to be one of those people on some crap fad diet. It's not healthy. People on stupid duets are miserable - they're hungry all the time. I'm happy and I'm fed," she said.
But she also insisted that she would never be stick thin.
"In the words of Bridget Jones, I will always be a little fat and I don't care. When you're my height, a couple of pounds off or on does make a difference. I'll always have a double chin in a pap shot, no matter how I look," she said.