Lily Allen reportedly snubbed MARK RONSON by not appearing at his Roundhouse concert on Tuesday (October 24th) night.
The 22-year-old singer, who is dating the Chemical Brothers' ED SIMON, failed to perform her rendition of the Kaiser Chiefs hit Oh My God.
Instead, the London-born New Yorker and stepson of FOREIGNER'S Mick Jones treated the Camden crowd to the real thing with a performance of the song by the band's lead singer Ricky Wilson.
Mark told the audience: "Lily Allen was supposed to be here but we had a misunderstanding and she wouldn't do it," reports the Sun.
"So I looked for the next best girl's voice in London - here's Ricky Wilson. We don't need Lily."
Other stars of Ronson's VERSIONS album which features covers of popular tracks included DANIEL MERRIWEATHER who performed The Smiths' STOP ME IF YOU THINK YOU'VE HEARD THIS ONE BEFORE and CHARLIE WALLER of RUNMBLE STRIPS who belted out Amy Winehouse'S BACK TO BLACK.