J.Press has the juice right now. For generations, the century-old American institution has outfitted guys in crisp Oxford shirts, boxy sack suits, and heirloom-grade Shetland sweaters, and rarely has it strayed from that heritage. But thanks to an injection of fresh energy courtesy of creative director Jack Carlson—bolstered by, y’know, a new cohort of JFK Jr. wannabes—the preppy stalwart has found itself once again at the center of the menswear discourse. Case in point: a just-dropped link-up with the next-gen prepsters at Alex Mill, whose reliably cheery menswear riffs on the exact type of wholesome Americana J.Press perfected decades ago. You know those collaborations that scan like shameless cash grabs with no real regard for either party’s legacy, let alone their actual customers? This ain’t one of them. Instead, the duo’s second effort picks up right where the first left off, remixing J.Press catalog classics in a kaleidoscope of sun-drenched spring hues. We’re talking garment-dyed chore coats cut from hardy recycled cotton blends, beefy rugby shirts in a Crayola’s box of colors, and at least …