Sometimes it's hard to let it go. That's what Idina Menzel's younger sister learned while growing up in the shadow of the future "Frozen" star " the Anna to her Elsa. As Cara Mentzel writes in "Voice Lessons: A Sisters Story" (St. Martin's Press, out now), the three-years-older sibling she calls Dee (or Dina) was...
SOURCE: The New York Post at 05:09PM on October 11, 2017