Demi Lovato performing "Cool for the Summer" at Alan Carr Chatty Man in UK on [September, 9th], 2015. Facebook - http://www.facebook.com/demilovato Twitter - http://www.twitter.com/ddlovato Tumblr - http://demilovato.tumblr.com Official Site - http://www.demilovato.com Google+ - http://gplus.to/DemiLovatoGPlus