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Miranda Lambert stunned at the Country Music Awards earlier this month, looking slender and gorgeous in a sleek blue dress.

But after she debuted her slimmer figure, the rumors started instantly. Today, the "Hell on Heels" singer, 30, posted an open letter to her fans slamming a report that claimed she had surgery to lose the weight.

"Though I NEVER care what the tabloids have to say about me," she wrote, "I wanted to address this certain story they are running this week and set the record straight. I DID NOT have surgery to lose weight. That is ridiculous."

See: Miranda Lambert Wows at CMA Awards With Slimmer Figure

She added that she in fact lost the weight "the healthy and good old fashioned way."

"Watching what I eat and working out with my trainer Bill Crutchfield. As for the assumed number of pounds lost…? I don't even know!" she added. "Like I have always said, it's not about a scale, it's about how you feel and how your jeans fit."

As for her skinny jeans being baggy when she turned 30 on Nov. 10: "Mission accomplished!" she said. "So for anyone who is tempted to read the "Trash Talk" please don't. I am proud to be a normal size girl and I want to encourage everyone to be confident at any size. Thanks for the support yall!"

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