Katy Perry and Rihanna tweeted today:It is CONFIRMED!!!! Brazil, I'm coming to you for Rock in Rio! I can't wait!! #brazilHereIcome
That's RIGHT Brazillians!!! I'm coming to RIO for ROCK IN RIO on September 23rd performing @ 9pm!!! Check it: www.rockinrio.com#KATYBRAZIL
Katy and Rihanna are BFF's for a long time. And they already talked about a collaboration. Will they perform together or separate? I hope they're going to perform a new song, with each other! We will know it on September 23rd.