Early in the season, one show had all the buzz: Givenchy. Not only was Riccardo Tisci bringing his runway from Paris to New York to mark his 10-year anniversary at the house, but he was also opening it to the public? And enlisting pal Marina Abramovi??  In a city forever upping the ante on the experiential fashion show—bands! drones! pole dancers!—Tisci delivered a beautiful meditation on gentility. In the background, Abramovi?’s performance artists re-created mundane actions (embracing, climbing ladders) in slo-mo, while the message on the runway circled around a singular premise: the meeting of the masculine and feminine, seen through a boudoir lens. Tailoring came softly cut, like robes, and slipdresses and lingerie lace abounded. That vibe—simple, serene, a bit undone—would continue throughout the New York shows.    Lighten Up Designers as diver