There are a few sartorial signifiers that summer is upon us. And the swift turn to white in all our outfits serves as a pivotal one. So, it’s no wonder our favorite it girls were all seen out in all-white looks within 48 hours of each other. From Taylor Swift to Simone Ashley , and Alix Earle , all-white outfits means we’ve officially arrived in the summer months, and it often leads the monochromatic charge through August and into early September. Historically, wearing white during summer was meant to signify that you lived a life of leisure. I’ve always deemed all-white as a cool-girl fashion choice, especially in major cities. When you see someone in head-to-toe white, you immediately wonder if they have any concerns about stains and dirt (I know I would). Instead, their monochromatic moment proves they’re spending more time lounging and strolling over rushing around.…