X Factor winners Alex & Sierra are excited for what the future holds. Find out how they plan on making their fans proud!Subscribe now for more THE X FACTOR USA clips: http://bit.ly/TXF3_SubscribeTune in to THE X FACTOR USA Wednesday & Thursday 8/7c on Fox!Like THE X FACTOR on Facebook: http://bit.ly/TheXFactorUSA_FBFollow THE X FACTOR on Twitter: http://bit.ly/TheXFactorUSA_TwitterAdd THE X FACTOR on Pinterest: http://bitly.com/TXF_PinterestAdd THE X FACTOR on Google+: http://bit.ly/TheXFactor_GooglePlusSee more of THE X FACTOR on our official site: http://www.thexfactorusa.com/Like FOX on Facebook: http://fox.tv/FOXTV_FBFollow FOX on Twitter: http://fox.tv/FOXTV_TwitterAdd FOX on Google+: http://fox.tv/FOXPlusThe award-winning international phenomenon THE X FACTOR is back. In Season Three of the hit competition series hosted by Mario Lopez, THE X FACTOR judges will travel the nation searching for talent 12 years old or over -- both solo artists and vocal groups -- who are willing to b