FULL TANK

Get the core right and the rest will follow. At the heart of the athleisure trend are body-con basics like a tank top. Ribbed, sea-spray white – it’s the details that count. Christopher Esber top, $320. Chanel Code Coco steel and ceramic watch set with diamonds, $15,850, from the Chanel boutiques.

Beauty note: Chanel Les Beiges Healthy Glow Sheer Powder SPF 15 in 30.