Alex & Sierra was an American duo consisting of Alex Kinsey (born September 8, 1991) and Sierra Deaton (born February 11, 1991), who won the third and final season of The X Factor US.
Alex & Sierra adalah duo pop/indie folk yang terdiri dari Alex Kinsey (lahir 8 September 1991) dan Sierra Deaton (lahir 11 Februari 1991), yang memenangkan musim ketiga dari The X Factor (Amerika Serikat).