Katy Perry: Rihanna Duet Will Be "Iconic"
However, K-Pez has told her fans they will have to wait for the track...
The 27-year old explained: "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.
"I want it to be like that Aretha Franklin song 'Sisters Are Doin' It for Themselves'."
The Kanye West and Jay-Z's tune Ni**as In Paris for Cotton's show.