<P> 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 . 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 . </P>
<P> 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 . 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 . </P>
how far did alex and sierra make it on x factor
how far did alex and sierra make it on x factor
won the third and final season of The X Factor US
won the third and final season of The X Factor US