Guest Stars Dua Lipa as Herself Taylor Swift as Herself Shawn Mendes as Himself Jennifer Lopez as Jennifer Lopez Halsey as Herself Camila Cabello as Herself Post Malone as Himself Khalid as Himself Zedd as Himself Liza Koshy as Herself Mariah Carey as Herself Cardi B as Herself Panic! at the Disco as Themselves Brendon Urie as Himself The Chainsmokers as Themselves
