The US singer said the pair could perform together at X Factor mogul Simon Cowell's wedding.

The trio befriended each other earlier this year after Perry stood in for Dannii Minogue as a judge on the TV talent contest.

"I'd love to perform with Cheryl and I think a great time to do it would be at Simon's wedding - what else do you get the man who has everything?" Perry told Now! magazine.

Meanwhile, the singer is currently at number one on the UK album chart with her second LP, 'Teenage Dream'.

But Killers frontman Brandon Flowers is expected to replace her this weekend with his debut solo album, 'Flamingo'.

(by Jason Gregory)