OMG. It’s Louisa Johnson! The blonde beauty takes to the stage to perform new song, ‘Unpredictable'. This image appears in the gallery:Summertime Ball 2017 Live: The Best Photos From On Stage At Wembley 98. OMG. It’s Louisa Johnson! The blonde beauty takes to the stage to perform new song, ‘Unpredictable'. Picture: Jordan Curtis Hughes 118 images See the full gallery: Summertime Ball 2017 Live: The Best Photos From On Stage At Wembley