The soundtrack at the shows this week could easily have been Van Halen's "Panama," because straw hats were perched atop models' heads everywhere. Behnaz Sarafpour's had ragged edges, ideal for lying in hammocks. Thakoon's pleated look gave the appearance of ruffles, while Lacoste went for more traditional white. And rag & bone's tiny topper resembled a derby, with just enough brim to flip up.