"LMAO Star Magazine!" the singer tweeted of the tabloid's latest claim. "I don't know if you [doctor] the pics or pic the worst one you can find, but I'm far from pregnant . . . "
In fact, although the once pin-thin Rimes has been showing off a healthier, curvier figure lately, she says she's recently lost weight. She added in her tweet that she "just dropped a jean size."
Rimes is already a stepmom to Mason, 10, and Jake, 6, her husband's two sons with ex-wife Brandi Glanville. In May, the "Spitfire" singer told Us Weekly that she's not in a rush to start a family of her own yet.
"We talk about having kids all the time and I would love to, but it's gonna be a second," she said. "I'm still young and fertile -- it's all good!"
"I was just with the kids for the last two days taking care of them on my own, and trust me . . . I have a newfound respect for working moms who do it all by themselves," Rimes added about caring for the boys. "It was my birth control for a little bit -- so overwhelming!"
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