ET’s Denny Directo catches up with Katy Perry at the ‘American Idol’ season 20 finale, just moments after Noah Thompson took home the big win. Katy reflects on what it means to be a part of these young singers’ journeys, especially after getting to perform her hit ‘Firework’ with finalist Leah Marlene, who would sing the song in talent shows growing up. While ABC has renewed ‘Idol’ for season 21, it remains to be seen if Katy and her fellow judges — Luke Bryan and Lionel Richie — will return to the table, but she hints she plans to stick around for a while longer. Plus, Katy shares how happy she is for her pal Rihanna, who just welcomed her first child.