Guest Stars Shay Mitchell as Herself Lorde as Herself Lilly Singh as Herself K.J. Apa as Himself Keke Palmer as Herself DNCE as Themselves Brandon Flynn as Himself Nikki Bella as Herself Camila Cabello as Herself Iggy Azalea as Herself Bea Miller as Herself Niall Horan as Himself 4YallEntertainment as Themselves Julia Michaels as Herself Martha Hunt as Herself Post Malone as Himself Tyrone Edwards as Himself (Co-Host) Imagine Dragons as Themselves Hedley as Themselves Liz Trinnear as Herself (Co-Host) Jazz Cartier as Herself Arkells as Themselves
