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Source:http://www.celebutopia.net/forum/showthread.php/katy-perry-z100s-jingle-ball-2008-press-room-97950.html
http://www.celebutopia.net/forum/showthread.php/katy-perry-performs-stage-during-z100s-jingle-ball-97915.html
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http://www.celebutopia.net/forum/showthread.php/rihanna-performs-z100-jingle-ball-concert-madison-square-97938.html
Source:http://www.celebutopia.net/forum/showthread.php/beyonce-knowles-poses-award-she-received-40-principales-97955.html
http://www.hotcelebshome.com/beyonce-knowles-los-40-principales-awards-in-madrid/
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Source:http://www.celebutopia.net/forum/showthread.php/pussycat-dolls-kiis-fms-jingle-ball-2008-arrivals-97267.html
http://www.celebutopia.net/forum/showthread.php/pussycat-dolls-perform-part-kiis-fms-jingle-ball-97269.html