By Breaking Celebrity News Staff

LeAnn Rimes has hit back at critics attacking her for her super slim frame, telling late night comedienne Chelsea Handler, 'I was fat. I grew up!"

The singer, 29, who debuted a noticeably skinnier body last year insisted that she lost weight naturally, through a combination of growing up and working out.

When outspoken Handler quizzed Rimes as to why she looks so much thinner than previously, she shot back: "I was a baby! I was fat. I had baby fat. I grew up. I work out. There's nothing else to explain."

It's not the first time Rimes has spoken out on the subject of her weight. As Breaking Celebrity News previously reported, back in October she told the Associated Press: “You know, I went through all I've gone through in the last few years and I was going through a divorce and I couldn't get out of bed, and so I gained 10 pounds and then I lose 10 pounds because now I'm moving around and I'm working and you know, I don't stop and no one sees that (weight loss) actually can happen like naturally.