Katy Perry is officially appearing on her final episode ... to be doing this huge music festival in Brazil called Rockin' Rio. It's really exciting," she said at the time. "It's a big deal.

Katy Perry said goodbye to her time judging American ... Though a release date hasn't been announced, Perry is headed to the Rock in Rio festival in Brazil in June to perform, and fans can ...

Bianca Del Rio reigns as Orpheus' celebrity monarch. Photo: Erika Goldring/Getty Images Katy Perry: The singer performed at the Endymion Extravaganza. So did Train. City Councilmember Helena ...

"WAS KATY PERRY BUSY?!?!? I'M SORRY I LOVE RIHANNA BUT ... I'm going to be doing this huge music festival in Brazil called Rock in Rio," Katy revealed, suggesting a break from Idol to reconnect ...