One Direction rehearsing at the Jingle Bell Ball 2011 at London's O2 Arena. This image appears in the gallery:Backstage At The 2011 Jingle Bell Ball (Sunday) 9. One Direction rehearsing at the Jingle Bell Ball 2011 at London's O2 Arena. Picture: Richard Johnson 39 images See the full gallery: Backstage At The 2011 Jingle Bell Ball (Sunday)