Former "American Idol" judge Kara DioGuardi, the Grammy-nominated songwriter and star of Bravo's "Platinum Hit," makes her Main Stem debut Sept. 5 in the Tony-winning revival of Chicago , now the fourth longest-running show in Broadway history, at the Ambassador Theatre....

Former "American Idol" judge Kara DioGuardi, the Grammy-nominated songwriter and star of Bravo's "Platinum Hit," makes her Main Stem debut Sept. 5 in the Tony-winning revival of Chicago , now the fourth longest-running show in Broadway history, at the Ambassador Theatre....

Former "American Idol" judge Kara DioGuardi, the Grammy-nominated songwriter and star of Bravo's "Platinum Hit," makes her Main Stem debut Sept. 5 in the Tony-winning revival of Chicago , now the fourth longest-running show in Broadway history, at the Ambassador Theatre....

Former "American Idol" judge Kara DioGuardi, the Grammy-nominated songwriter and star of Bravo's "Platinum Hit," makes her Main Stem debut Sept. 5 in the Tony-winning revival of Chicago , now the fourth longest-running show in Broadway history, at the Ambassador Theatre....

Former "American Idol" judge Kara DioGuardi, the Grammy-nominated songwriter and star of Bravo's "Platinum Hit," makes her Main Stem debut Sept. 5 in the Tony-winning revival of Chicago , now the fourth longest-running show in Broadway history, at the Ambassador Theatre....

Former "American Idol" judge Kara DioGuardi, the Grammy-nominated songwriter and star of Bravo's "Platinum Hit," makes her Main Stem debut Sept. 5 in the Tony-winning revival of Chicago , now the fourth longest-running show in Broadway history, at the Ambassador Theatre....

Former "American Idol" judge Kara DioGuardi, the Grammy-nominated songwriter and star of Bravo's "Platinum Hit," makes her Main Stem debut Sept. 5 in the Tony-winning revival of Chicago , now the fourth longest-running show in Broadway history, at the Ambassador Theatre....