Fifth Harmony + More Hit Philly for Jingle Ball [PHOTOS + VIDEO]Fifth Harmony + More Hit Philly for Jingle Ball [PHOTOS + VIDEO]The Philly edition of the 2014 Jingle Ball Tour hit the City of Brotherly love on Dec. 4. Fifth Harmony were there. Avril Lavigne, Flo Rida, Robin Thicke and more were on site, too.Amy SciarrettoAmy Sciarretto