Rihanna joins Kanye West on stage...

Rihanna was sitting front row in the crowd at last night's FYF Fest (Los Angeles, California) when Kanye West handed her the mic to perform their hit, 'Four, Five Seconds,' as well as 'All Of The Lights.'

Kanye stepped in as the headliner after Frank Ocean pulled out, and Navy was pleased. It's also crazy how fans were expecting new music/albums from Rihanna, Frank Ocean, AND Kanye during this point in the year and still, we get nothing.

Thoughts?