What do you when your young, rich and your parents own Leonard Bernstein’s former apartment in the Dakota? Have a seance with your well-connected friends in an attempt to summon the late “West Side Story” composer’s spirit, naturally. Larry Milstein, 22, and his sister Toby, 24, hosted the seance from their park-facing apartment in the building famed for its appearance in “Rosemary’s Baby.” They are the children of Cheryl and Philip Milstein — part of […]