More about: Katy Perry

Katy Perry has revealed plans to record a duet with Rihanna, but claims the duo will only team up when they have the perfect song.

The US superstars have long hinted and teased a potential collaboration, and Perry has now confirmed that plans are afoot to make the idol chatter a reality, after endless speculation.

"We've actually been talking about it for years, so we can't let anyone down," said Perry in an interview with Los Angeles radio station 102.7 KIIS FM. "We have to do the best song ever. Beyond that, I think we'll definitely get around to it and when it happens, you are going to know."

Watch Katy Perry's 'Unconditional' video below

Katy Perry returns to the UK in 2014 for a string of live show, featuring support from 'I Love It' chart toppers, Icona Pop. Tickets for Perry's tour are on sale now. For more information visit Gigwise Gig Tickets.

UK dates for The Prismatic World Tour are as follows:

May 7 - Belfast Odyssey Arena
May 8 - Belfast Odyssey Arena
May 10 - Newcastle Metro Arena
May 11 - Nottingham Capital FM Arena
May 13 - Birmingham LG Arena
May 14 - Birmingham LG Arena
May 17 - Glasgow, The SSE Hydro
May 17 - Glasgow, The SSE Hydro
May 20 - Manchester Phones 4U Arena
May 21 - Liverpool Echo Arena
May 23 - Sheffield Motorpoint Arena
May 24 - Manchester Phones 4U Arena
May 27, 28, 30, 31 - London O2 Arena

Below: Katy Perry closes the 2013 iTunes Festival in London

More about: Katy Perry