Jessie J live at the 2011 Summertime Ball This image appears in the gallery:Jessie J live at the 2011 Summertime Ball 11. Jessie J live at the 2011 Summertime Ball Jessie J with Devlin at the 2011 Summertime Ball at Wembley with Starbucks Frappuccino® Pics: PA 13 images See the full gallery: Jessie J live at the 2011 Summertime Ball