Katy Perry's Riff Raff fun

Riff Raff and Katy Perry arrive to the 2014 MTV Video Music Awards at The Forum. Pic: Getty Images

Pic: Getty Images

Pic: Getty Images

Pic: Getty Images

Katy Perry and Iggy Azalea Pic: Getty Images

Pic: Getty Images

Katy Perry and rapper Juicy J Pic: Getty Images

Katy Perry and Nicki Minaj Pic: Getty Images

Pic: Getty Images

Pic: Getty Images

Riff Raff, Katy Perry, Sam Smith and singer Charli XCX Pic: Getty Images

Pic: Getty Images