Whitney Leavitt GAGGED Over Jennifer Lawrence's Mormon Wives Obsession (Exclusive)

Whitney Leavitt and her 'Dancing With the Stars' pro partner Mark Ballas chat with ET backstage at 'Rock and Roll Hall of Fame' night, which aired live on ABC and is now streaming on Hulu and Disney+. Whitney reacted to Danielle Fishel's shocking elmination and Jennifer Lawrence's obsession with 'The Secret Lives of Mormon Wives.'