LeAnn Rimes is in shape and proud.

Is LeAnn Rimes Joining 'The Real Housewives Of Beverly Hills?'

On Friday, following the revival of her ongoing feud with The Real Housewives of Beverly Hills star Brandi Glanville, Rimes took to Instagram, where she shared a “totally obnoxious” photo of her “ab.”

“New headphones Thx to my @kikicaldas #ChristmasGifts totally obnoxious pic but I’m so proud I can even maintain an ab on this tour #coldweather #motivationdrainer #latenightfood but I’ve been working it! #health,” Rimes captioned the photo, which featured the singer in a white crop top and sweat pants.

LeAnn Rimes Looks Like Brandi Glanville In New Pic

In the last several months, things between Rimes and Glanville had been civil, but this week, that changed. During an appearance on Watch What Happens Live, Glanville spoke of Rimes and Cibrian as she and host Andy Cohen played “Shag, Marry, Kill.” After Cohen chose Cibrian to shag, Glanville revealed her ex was “very well hung,” and claimed “he’s good at what he does.”

Then, Glanville told Cohen that Cibrian “hated the show and sends letters to you and Bravo and Evolution that said, ’No kids, no this, no that.'"

On Thursday, Rimes responded to the story on Twitter, explaining, “It’s like a tabloid mag that doesn’t even know the person but talks about their life like they do.”

In 2011, Rimes married Cibrian after a highly publicized affair during her marriage to Dean Shermet. At the time of the affair, Glanville was married to Cibrian.

Tags: LeAnn Rimes