You've Changed (Sia song)

"You've Changed" is a song by Australian singer-songwriter Sia, which is the lead single from her fifth studio album We Are Born. "You've Changed" was originally co-written and released in 2008 by American DJ/producer Lauren Flax, which was then re-recorded for Sia's 2010 album, We Are Born. The single was announced through a Twitter update that Sia posted. The song was given away for free and was released on 28 December 2009. On 31 January 2010 the song peaked at number 31 on the Australian ARIA Singles Chart, becoming Sia's highest charting single on that chart until her 2014 hit "Chandelier". The song was placed 72 on the Triple J Hottest 100 countdown in 2009.

In the United States, the original Lauren Flax version reached number 47 on the Billboard Hot Dance Club Songs chart in April 2010. It was also one of the songs used in the Season 1 finale of The Vampire Diaries.