Camila Cabello opened the show with a team Of Dancers Out In Force. This image appears in the gallery:Summertime Ball 2018 Live: The Best Photos From On Stage At Wembley 87. Camila Cabello opened the show with a team Of Dancers Out In Force. And she got the crowd completely pumped. Picture: Joshua Atkins 91 images See the full gallery: Summertime Ball 2018 Live: The Best Photos From On Stage At Wembley