This is the first of Sivan's two appearances on the show this week.
Australia pop superstar Troye Sivan has returned to The Tonight Starring Jimmy Fallon for another performance and interview, this time bringing along collaborator Charlie XCX.
The pair performed their recently released track 1999, gaining a huge cheer from the audience. Check it out below.
Sivan also joined Fallon for a chat, discussing the track and its video and his first appearance on the program, as well impressing the host and in-house band The Roots with his athletic skills as seen in the Instagram post below.
Sivan will be returning to the program later in the week to perform a track from the Boy Erased soundtrack, the film he appears in alongside Joel Edgerton and Nicole Kidman.
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