Katy Perry planning 'iconic' duet with Rihanna

London, Mar 20 (ANI): Katy Perry has revealed that the much-talked about duet with good friend Rihanna will have to wait, as they want to take their time on the project and release an "iconic" collaboration.

The pop star pals have been open about their desire to tackle the charts together, but the 'I Kissed A Girl' hitmaker has high hopes for the track and is keen to emulate the success of the Eurythmics and Aretha Franklin's 1985 hit.

"We've collaborated on a lot of things, but just not songs yet. It's one of those things that's got so much build up that we have to deliver," the Daily Express quoted her as telling Radio 1.

"I want it to be like that Eurythmics and Aretha Franklin song Sisters Are Doin' It for Themselves, not like (Shakira and Beyonce song) Beautiful Liar.

"But I definitely want to do something that is so iconic. (Rihanna's) kind of busy too. We're both busy but we planted the seed two years ago. How disappointed would you be if that song came out and it's no good? Sometimes you have to wait for greatness," she added. (ANI)