ABC News Studios will air “Cinderella: The Reunion, A Special Edition of 20/20” featuring members of its all-star cast Brandy, Whoopi Goldberg, Paolo Montalban, Victor Garber, Bernadette Peters, Jason Alexander and Veanne Cox. Billy Porter, Todrick Hall, Debra Martin Chase, Neil Meron, and costumer Ellen Mirojnick will also make appearances.