The third and final season of the American music competition television show The X Factor premiered on Fox on September 11, 2013, and ended on December 19, 2013. This season was hosted by Mario Lopez.
Alex & Sierra 2015
Paulina Rubio
Simon Cowell
Mario Lopez
Alex & Sierra
Videos
Alex & Sierra were an American duo consisting of Alex Kinsey and Sierra Deaton, who won the third and final season of The X Factor. They were mentored by Simon Cowell. Their debut album It's About Us
The X Factor (American TV series) season 3
…judges' houses rounds of the competition which have been replaced with a new middle section, more reminiscent of the live shows. On December 19, 2013, Alex & Sierra won the show, as mentored by Cowell. On February 7, 2014, Cowell announced he was returning to the British show to judge the 2014 British series, which…
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