Katy talks about playing Monopoly Draw against Usher, doing 80 shows in Vegas for her residency, her huge toilet set piece, her grandmother living in Las Vegas, singing at King Charles' coronation, a viral video of her looking for her seat, the new season of American Idol on ABC, visiting Lionel Richie and Luke Bryan's hometowns, and she reveals that this will be her last season. Watch Jimmy Kimmel Live! WEEKNIGHTS 11:35/10:35c on ABC. Stream on Hulu.