Sigma looked AWESOME as they posed on the red carpet! This image appears in the gallery:AAA Pass At The Ready? Check Out The Best Backstage Moments From Capital's Jingle Bell Ball With Coca-Cola 10. Sigma looked AWESOME as they posed on the red carpet! (Picture: PA Photos) 69 images See the full gallery: AAA Pass At The Ready? Check Out The Best Backstage Moments From Capital's Jingle Bell Ball With Coca-Cola