LeAnn Rimes went on X-Factor Tuesday night and stumbled and screeched her way through a duet of “How Do I Live” with thirteen-year-old Carly Rose Sonenclar, then had the balls to claim that the reason she sounded so terrible was because Carly Rose was “nervous and had trouble hitting the right notes.” TMZ says:

Carly Rose Sonenclar’s family is royally pissed off at LeAnn Rimes for trashing their daughter’s “X Factor” performance Tuesday night.

Rimes insists she was sober, but says if things were awkward, it was only because, “I was trying to help this 13-year-old girl who was having some trouble with the song.”

Rimes later claimed she never gave a quote, but we can tell you … her rep specifically gave us the quote and told us we could use it.

Carly Rose’s mother and other relatives are telling people they can’t believe LeAnn threw their daughter under the bus, and that it was clear — Carly Rose was a pro and even out-performed LeAnn at her own song.

LeAnn Rimes can’t walk without stumbling, can’t remember the words to her own song, and can’t hit half of the notes, but it’s an outperformance like you haven’t seen since the toast scene in “Bridesmaids.” Bravo, LeAnn Rimes. I didn’t think it was possible to hate you any more than I already did.