Liliane Montevecchi " Be My Valentine
    by Elizabeth Ahlfors   At Feinstein’s/54 Below charismatic Liliane Montevecchi opened her show slyly emerging from the back of the house. With a flirtatious air, she strolled among the tables, singing Charles Aznavour’s, “Je Cherche Un Billionaire.” (Aznavour may have mentioned “millionaire,” but for Montevecchi, today’s economy calls for bigger bucks.) Thi…