Rihanna and Katy Perry are going to "Rock in Rio"

Rihanna and Katy Perry confirms presence at the "Rock in Rio". They will perform on September 23.

The "Rock in Rio" is one of the biggest musical events of the world where many bands come together. This year's "Rock in Rio" held between September 23 and October 2.

For more information, click here to visit the website of "Rock in Rio".