While the feud was probably already going when Gaga agreed to the appearance, Sharon recently fired off a new round of insults aimed at Gaga, calling her a bully and a hypocrite in her autobiography.
According to the Daily Star, Gaga is now in "no mood" to even be in the same building as the Osbourne matriarch and producers are considering taking drastic measures in order to keep the peace.
The website reports that producers are considering letting Gaga pre-record her bit so that she doesn't have to be in the same room as Sharon.
Still, we're not sure how Sharon would react to even a taped performance, but we're very curious to see how this one plays out.
Do you think Gaga and Sharon can put their differences behind them?