The singer loves having womanly curves, but admits she can quickly and simple lose extra pounds if she feels she has gotten too heavy.
She said: "I have to admit, I do lose weight easily. Sorry, I know that's an annoying thing to say, but it's true. If I put in the work the weight goes. I do like having curves though, so I don't like to lose too much weight. I like to feel like a woman."
The 29-year-old star maintains her physique with regular exercise sessions and claims to see results instantly if she needs to step up her workouts in preparation for an event.
She explained: "I keep in shape by doing yoga three or four times a week if I get time. It's great for toning and also for stress relief. I also go on an exercise bike for about 30-45 minutes twice a week if I can. If I stick to that for two weeks solidly I'll tone up really quickly.
"If I know I'm going to be on the beach in a bikini I'll do squats because they're so good for your butt. They keep it nice and high and tight. I've been doing a fair few recently."
However, Kelly admits losing weight is simpler if teamed with a healthy diet.
She added: "I'm telling you, I'm not eating sugar. I didn't even try to lose weight. I read this book, called 'You Are What You Eat'. The author, Gillian McKeith is talking about sugar, she's talking about meat, she's talking about cheese…"