APOLOGIES FOR THE DELAY

Seated beneath photographic panels by the artist Stan Douglas, Hadid offers an incisive lesson in on-the-go cool in a Jil Sander dress, $2,160; jilsander.com. Saint Laurent Rive Droite tennis-racket case; yslrivedroite.com. Paravel carry-on, $275; tourparavel.com. Handbags by Loro Piana and Coach. Balenciaga cap. Audemars Piguet watch.