Katy Perry to host MTV Video Music Awards show

Pop singer Katy Perry will host the MTV Video Music Awards (VMA) in August, MTV said on Thursday, and will also perform and compete for some top awards. 

     The hosting gig will kick off a busy 12 months for Perry, who embarks on a world tour in September and will be a judge in 2018 on the new version of television talent show "American Idol." Perry, who released her latest album, "Witness," in June, is the most followed person on Twitter, with more than 100 million followers. 

   Her big-budget video "Chained to the Rhythm" will compete in four categories at the VMA show, but she was snubbed in nominations for the top two categories of video of the year, and artist of the year.