"The Last Day on Earth" is a song by Australian singer Kate Miller-Heidke for her second studio album, Curiouser. It was released on 24 July 2009 as the album's third single and has since been certified 3× platinum by ARIA. It was Miller-Heidke's first platinum-selling single.
Not initially intended for release as a single, the song was used in promo advertisements for Australian soap opera Neighbours, and the song then began selling digitally, and peaked at number 2 on iTunes. When the song debuted on the Australian ARIA Singles Chart at number 35, it was announced that the song would be released as a physical single. A CD single was quickly produced, and released on 24 July 2009 in rush release. After the release of the physical single, it became a huge success for Miller-Heidke, making a dramatic leap from number 35 to number 7, becoming her first ever top ten hit. The single peaked at number 3 on the Australian ARIA Singles Chart for six weeks, and reached number 1 on the ARIA Australian Singles Chart, staying there for 6 weeks in a row. "The Last Day on Earth" lasted in the Top 50 for 25 weeks in total. The single contains only one song as it was rushed into production. "The Last Day on Earth" was nominated for Single of the Year at the 2009 ARIA Awards.
The video starts in a dark house decorated for Christmas. We then see Miller-Heidke in a peach-coloured dress singing in numerous locations in a house including her living room with a fish tank. The outdoor Christmas decorations light up and Miller-Heidke walks outside and sings toward the camera as the video ends.
It was released on Kate Miller-Heidke's official YouTube channel on 3 August 2009.
The video was filmed in a house on the Northern Beaches of Sydney.