MILAN — If Instagram were a fashion designer, it would be Simon Porte Jacquemus.
If one needed further proof of the French designer’s visual mastery and power of engagement, a quick virtual trip to the Jacquemus feed would serve as evidence, underscored by a carousel marking the countdown to the brand’s upcoming 15th anniversary show in Capri on Monday.
Announcing the label’s arrival on the Italian island — replete with…