Perry skød videoen til "Firework" i [[Budapest]] i september 2010. En åben casting hev uforudsete 38.000 ansøgere ind.<ref>{{cite web|url=http://www.xpatloop.com/news/katy_perrys_video_made_in_budapest |title=Katy Perry's Video Made In Budapest, Xpatlop, October 7, 2010 |publisher=Xpatloop.com |date= |access-date=2011-06-18}}</ref> Hun spillede efterfølgende en koncert i Budapest den 1. oktober, hvilket var hendes første koncert i [[Centraleuropa|Central-]] og [[Østeuropa]]. Perry udgav derefter parfumen "Purr" i november. Den findes i en [[kat]]teformet flaske.<ref>{{cite web|url=http://www.mtv.co.uk/artists/katy-perry/news/231426-katy-perry-perfume|title=Katy Perry To Launch Perfume|publisher=[[MTV]] UK|date=23. juli 2010|access-date=30. december 2011|archive-date=28. juli 2010|archive-url=https://web.archive.org/web/20100728074911/http://www.mtv.co.uk/artists/katy-perry/news/231426-katy-perry-perfume|url-status=dead}}</ref><ref>{{cite web|url=http://stylenews.peoplestylewatch.com/2010/07/22/katy-perrys-purr-fect-new-perfume-launch/|title=Katy Perry’s ‘Purr’-fect New Perfume Launch|date=22. juli 2010|first=Gillian|last=Koenig|work=[[People (magazine)|People]]|publisher=[[Time Inc.|Time Inc]]|access-date=30. december 2011|archive-date=21. juli 2011|archive-url=https://web.archive.org/web/20110721091608/http://stylenews.peoplestylewatch.com/2010/07/22/katy-perrys-purr-fect-new-perfume-launch/|url-status=dead}}</ref>
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