Global superstar, Katy Perry, has announced that she will be returning to the U.K. in May 2014 to bring The Prismatic World Tour to cities up and down the country in support of her second U.K. number one album, Prism. The tour will start on 7^th May at Belfast’s Odyssey Arena and come to the Liverpool Echo Arena on the 21^st May.  Great Britain will be the first country on what is expected to be a year-long World Tour.