Her song Zero Gravity was well received by voters.
EUROVISION fans get excited... Australia has a representative.
In an Australian first, the public has helped choose the musical act to perform at the 2019 Eurovision Song Contest, and it is...
She and nine other Australian acts performed in front of a panel of judges as the public voted via text message and she emerged the winner.
Miller-Hedke had a total of 135 points, 87 points from the public and 48 points from the jury of industry judges with her single Zero Gravity.
Electric Fields came second with their song 2000 and Whatever on 114 points, while Sheppard came in third with On My Way on 87 points.
Miller-Heidke said she was "totally overwhelmed" by the result.
I can’t believe it. Thank you SO MUCH to everyone who voted. We did it! It was a fierce competition and I’m beyond thrilled that you chose me to represent Australia at Eurovision 2019. #eurovision2019 #ausdecides #eurovision pic.twitter.com/eH70dbRtcu— Kate Miller-Heidke (@kmillerheidke) 9 February 2019
The 64th Eurovision Song Contest 2019 is set to take place in Tel Aviv, Israel from May 14.