VIDEO: Katy Perry has the last word with epic 'Roar' performance

Katy Perry's new single, "Roar," was too huge even for Barclays Center -- to close out last night's VMAs, Perry had to take it outside. 

"I'd like to have the last word," Perry said before beginning her performance.

Taking the lyrics of "Roar" literally, Perry and her dancers performed on a stage made to look like a boxing ring, set up against the backdrop of the Brooklyn Bridge. Perry performed in silk shorts and hand-wraps, even incorporating a jump rope routine. 

"Roar" is on track to be one of the top selling singles of the year, in part because of a huge PR campaign by Katy Perry and her people, which included a gold semi-truck which drove across the country.