Mr Worldwide is heading back to the UK - Pitbull is on our INSANE line-up. This image appears in the gallery:WOAH! See The HUGE Names Confirmed For Capital's Summertime Ball 2015 With Vodafone 11. Mr Worldwide is heading back to the UK - Pitbull is on our INSANE line-up. 21 images See the full gallery: WOAH! See The HUGE Names Confirmed For Capital's Summertime Ball 2015 With Vodafone