Kim Petras, Mary J. Blige, Steve Lacy, Brandi Carlile and Luke Combs will also perform at next month's ceremony
Smith also played the title track from their imminent fourth album, 'Gloria'
Petras described the song as a "bad bitch anthem"
This year's ceremony is due to take place at The O2 Arena in London next month
Petras will perform alongside US indie-pop trio MUNA along with G Flip, Peach PRC, Alter Boy, BVT, Vetta Borne, Keiynan Lonsdale and more
"Loved getting our hands on this filthy banger!"
“Gay clubs raised me, basically. And I can confidently say that no one loves pop music more than gay clubs"
Taylor Swift, Nicki Minaj, David Guetta, Seventeen and Blackpink topped the full list of winners
Their fourth studio LP will feature collaborations with Ed Sheeran, Jessie Reyez, Koffee and Kim Petras
The first openly non-binary and transgender musicians to ever top the Hot 100