Source:http://www.hotcelebshome.com/katy-perry-at-mtv%e2%80%99s-total-request-live-in-milan/
Source: http://www.celebutopia.net/forum/showthread.php/katy-perry-performs-stage-mencap-little-noise-sessions-94920.html
Source:http://forum.phun.org/showthread.php?t=318707
Source:http://www.celebutopia.net/forum/showthread.php/katy-perry-2008-mtv-europe-music-awards-arrivals-94155.html
http://www.celebutopia.net/forum/showthread.php/katy-perry-2008-mtv-europe-music-awards-show-94162.html
Source:http://www.celebutopia.net/forum/showthread.php/katy-perry-mtv-europe-music-awards-press-conference-94046.html
Katy perry falls down video
