Rita Ora rounds off her Jingle Bell Ball set with recent hit single 'Party & BS (How We Do)'. This image appears in the gallery:Rita Ora - Jingle Bell Ball 2012 Best Bits In Pictures 15. Rita Ora rounds off her Jingle Bell Ball set with recent hit single 'Party & BS (How We Do)'. Picture: PA Photos 15 images See the full gallery: Rita Ora - Jingle Bell Ball 2012 Best Bits In Pictures