Her fans have bought 72 million digital singles online . Perry 's top hits include `` I Kissed a Girl , '' `` Hot N Cold , '' ` She has four gold , four platinum and 56 multiplatinum digital singles worldwide . Recording Industry Association of Japan began awarding gold and platinum digital singles in ' 04 .
Her fans have bought 72 million digital singles online . She has four gold , four platinum and 56 multiplatinum digital singles worldwide . Recording Industry Association of Japan began awarding gold and platinum digital singles in ' 04 .