Julia Michaels at the 2017 KIIS FM Wango Tango in Los Angeles 05/13/2017

Julia Michaels at the 2017 KIIS FM Wango Tango in Los Angeles 05/13/2017-1

The 23-year-old pop singer Julia Michaels, who co-wrote the song “Fire Starter” for Demi Lovato, at the 2017 KIIS FM Wango Tango in Los Angeles.

Julia Michaels at the 2017 KIIS FM Wango Tango in Los Angeles 05/13/2017-2

Julia Michaels at the 2017 KIIS FM Wango Tango in Los Angeles 05/13/2017-3

Julia Michaels at the 2017 KIIS FM Wango Tango in Los Angeles 05/13/2017-4

Julia Michaels at the 2017 KIIS FM Wango Tango in Los Angeles 05/13/2017-5