The X Factor 'The X Factor' determines its Top 40 acts and reveals each category's mentor 09/27/2013 The X Factor revealed its Top 40 acts during Thursday night's Fox broadcast of the reality singing competition's third season. Read More RELATED NEWS 'The X Factor' alum Jeff Gutt has "zero trepidation" about first tour as Stone Temple Pilots front-manDemi Lovato on her troubled past: "I didn't think I would make it to 21"Demi lovato discusses sobriety and her jealousy of Miley Cyrus TAGS: The X Factor Simon Cowell Demi Lovato Kelly Rowland Paulina Rubio Girls
