HELLUVA TIME: Guests getting decked out for Bette Midler’s annual “Hulaween” party Friday at the Waldorf-Astoria Hotel might want to reconsider their costumes. Michael Kors will be sizing up their regalia and doling out this year’s prizes which include such categories as Most Obvious Rental and How the F*!# Did You Do That. The designer won’t be the only discriminating eye in the crowd. Narciso Rodriguez is among the co-chairs and Douglas Little is designing the “Dia de los Muertos” decor combined with Midler’s Hawaiian theme. Elettra Wiedemann, Jane Krakowski, Renée Fleming, John McEnroe and Martha Stewart will be in the crowd at the fund-raiser for the New York Restoration Project. Before midnight all will be treated to a performance by Stevie Wonder.