Cheryl, who performed solo at yesterday's Jingle Bell Ball, laughs with band mate Nicola. This image appears in the gallery:Girls Aloud At the Jingle Bell Ball 2012 - Pictures 3. Cheryl, who performed solo at yesterday's Jingle Bell Ball, laughs with band mate Nicola. Picture: PA Photos 23 images See the full gallery: Girls Aloud At the Jingle Bell Ball 2012 - Pictures