More about: Lady Gaga

Lady Gaga is rumoured to be considering pulling out of her scheduled UK TV performance on The X Factor this winter after her row with judge Sharon Osbourne was this week re-ignited.

Osbourne and Gaga fell out in Janury 2013 when Ozzy's wife labelled Gaga's Little Monsters 'hideously violent' after a feud between the singer and Kelly Osbourne. The short-lived row has been again discussed in Sharon Osbourne's new autobiography, which is released on 10 October, in which the rock and roll matriarch describes Gaga as a 'bully' and 'hypocrite'.

Now, Gaga's planned performance on X Factor is believed to be in jeopardy.

"Sharon didn’t hold back in her comments and there is now a very real concern Gaga might just pull out of the show," says a source for the show to The Daily Star, and producers are planning to pre-record Lady Gaga's performance before Sharon Osbourne arrives at the studios.

Watch Lady Gaga's 2012 performance of 'Marry The Night' below

A source close to Cowell said: “I am sure we will be doing all we can to make Lady Gaga feel welcome."

Below: Lady Gaga's Little Monsters queue in London for iTunes Festival show

More about: Lady Gaga