Sing it, LeAnn!
LeAnn Rimes as been feeling under the weather -- but the talked-about country singer, 30, honored a commitment to croon on Wednesday night's X Factor with finalist Carly Rose Sonenclar.
Clad in a black leather dress and boots, Eddie Cibrian's wife appeared onstage with Sonenclar to sing her trademark 1997 smash, "How Do I Live."
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Although Rimes occasionally seemed to miss the notes and flubbed a few lyrics, the twosome were met with thunderous applause -- and praise from judge (and another former kid and teen star) Britney Spears, who called the performance "shockingly amazing."

Singer Leann Rimes performs onstage at FOX's "The X Factor" Season 2 Top 3 Live Performance Show on December 19, 2012 in Hollywood, California.
Credit: FOX
"That was one of the most fun moments I've had on the stage. It was amazing, I had a blast," Sonenclar gushed of Rimes. "You made me very comfortable."
"I love this girl so much," Rimes said of Sonenlar, 13. "She's such an amazing talent. I want to wrap her up and just hold her."
"I love my sweet and talented @CarlyRoseMusic on @TheXFactorUSA," Rimes tweeted right before the big show.
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Performing on The Tonight Show with Jay Leno one night before, Rimes admitted she wasn't feeling her best. "I was and am SO sick," she said.
