She said: “Russell has made very blasphemous jokes in the past, but he’s making fewer all the time because he knows that I am very sensitive about this subject.”
Katy, 26, also criticized Madonna for staging a mock crucifixion on stage for her ‘Confessions’ world tour in 2006 and admitted she can’t understand why it seems to be acceptable to poke fun at Christianity.
She added: “You can be frivolous and fun without needing to get involved in that. And I don’t know why that only happens to the Christian religion. I don’t see people simulating sex with statues of Buddha, for example.
“For me, spirituality is something very important and I don’t like it when people take it lightly. At times, I don’t understand why there are artists who play that card, like when Madonna gets up on a cross to sing.”