Katy Perry chats with ET's Denny Directo on the red carpet for 'American Idol,' which airs Sundays and Mondays on ABC. The ‘Roar’ singer reacts to the ‘crazy’ comments she was getting about the short black wig she’s wearing and jokes that she wants to gift it to her ‘AI’ replacement. Katy also reacts to winning all three judges' song contests, and discusses Kaibrienne's elimination saying the contestant will be a 'superstar' if she continues on her path.