<Tr> <Th> Website </Th> <Td> http://www.alexandsierraofficial.com </Td> </Tr> <Tr> <Th> Members </Th> <Td> Alex Kinsey Sierra Deaton </Td> </Tr> <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> On September 1, 2017, Alex & Sierra announced to the media that they had broken up over a year ago, and would no longer continue to make music together, but would branch out into their own solo careers . </P>

How far did alex and sierra make it on x factor