MILAN — A group of devoted fans camped outside the FiveFourFive flagship in Milan starting about 48 hours before its opening last Thursday. The excitement reached its peak the night before, fueled by midnight snacks, until the moment the window decal — blocking their view of the space — was removed, and the doors swung open at 10:30 a.m. Located on Via Fiori Chiari in the arty Brera district, the 968-square-foot store is the first permanent retail destination for the Italian post-streetwear brand and the culmination of six years of building a community that has fueled its rapid growth. It also marks FiveFourFive’s first step in maturity, beyond the “creator brand” label one could easily associate it with. The menswear company was established in 2020 by Luca Santeramo, a social media personality known as Sante to his community of almost 360,000 followers on Instagram alone. Inside the newly opened FiveFourFive flagship in Milan, the brand’s first retail outpost.…