Katy’s eye-watering payday for grand final  news.com.au‘Would be an outrage’: Katy Perry addresses ‘unfair’ GF song drama  Fox SportsKarl slams suggestion Katy Perry can't sing 'Roar' at AFL Grand Final  TODAY ShowKaty Perry looks slimmer than ever as she steps out wearing a $1,300 Australian designer outfit in Melbourne a  Daily MailKaty Perry reveals major ‘surprise’ Aussie star to sing at AFL Grand Final  Sky News Australia