ISABEL MARANT ticked all of the “Marant” boxes this afternoon: embroidery, tick; bead and mirror embellishment, tick; printed floaty dresses, tick; long and enveloping cardigans, a smattering of sequins and chunky silver jewels to complement it all, tick, tick, tick. Few can capture the insouciant, effortless Parisian vibe that Isabel Marant does so well, and today she continued to nail it.