Alex & Sierra were an American duo consisting of Alex Kinsey and Sierra Deaton, who won the third and final season of The X Factor US. The duo were also dating. They were mentored by Simon Cowell and became the first and only group to win the American version of the show. Their debut album It's About Us was released on October 7, 2014, on Columbia Records. Their EP As Seen on TV was released on September 30, 2016.