Katy Perry announced her tour dates in 2015 on twitter starting from February 16 2015 in Spain, Barcelona until March 22 in Stockholm - Sweden, but Perry didn't announced if her tour is going to end on March 22, who knows what will happen!, Her successivo tour data in September is going to be on September 9th in Vancouver, BC - Canada, her last tour data in 2014 is going to be on December, 20th in Vancouver, BC - Canada then cutting off the tour for a mese then resuming in February in Barcelona then (maybe) ending the tour in March.
