The show's resident critics are finally set to get a taste of their own cooking...
"Young Gregg's" likeness to a certain pop star didn't go unnoticed.
John previously made headlines when he claimed he and his MasterChef colleague had "never been friends".
MasterChef: The Professionals judge Monica Galetti stepped in for Gregg, alongside John Torode.
The Scottish presenter and chef had been based in Australia for the past two decades.
The news show announced the result before the BBC’s Celebrity MasterChef Christmas Cook-Off had even aired.
Katie is one of 20 stars who have signed up for the celebrity edition of the BBC cookery show.
The MasterChef judge has lost four stone after embracing a healthy lifetstyle.