NEW YORK — It had more polish than a whole case of Turtle Wax. On Monday afternoon, Carolina Herrera presented an uber-chic fall collection with the glamour of old Hollywood. Ladylike suits were cut neat and slim; gowns were long and languid, while Herrera’s smart tuxedos were some of the best around. Grace Kelly would have approved, and so would Gene. Here, a stylish belted lame coat. For more on the fall shows, see pages 6 to 9.