It certainly will be the 'Wild' singer's party when she takes to the stage... This image appears in the gallery:Jingle Bell Ball 2013 Sunday Line-Up In Pictures 10. It certainly will be the 'Wild' singer's party when she takes to the stage... ... in front of 16,000 fans on night two. Picture: iTunes 18 images See the full gallery: Jingle Bell Ball 2013 Sunday Line-Up In Pictures