Katy Perry has shared her official music video for her latest single, ‘Smile’.The visual premiered yesterday (August 14) and is the first video to be part of Facebook’s new Premium Music Video service. It was directed by Matthew Cullen, who also directed Perry’s ‘Dark Horse’, ‘California Gurls’ and ‘Chained To The Rhythm’.Watch it below:‘Smile’ is the title track from Perry’s forthcoming sixth studio album, which is slated for an August 28 release.