Katy, who is up for five gongs at the event, will also perform at the prize-giving.

Rapper Kendrick Lamar is the top nominee at the 2017 MTV VMAs after scoring eight nominations.

His promo for Humble. will compete for the highest honor of Video of the Year against Bruno Mars' 24K Magic, Alessia Cara's Scars To Your Beautiful, Wild Thoughts by DJ Khaled, Rihanna, and Bryson Tiller, and The Weeknd's Reminder.