AG will partner with the historic Napa Valley vineyard Stony Hill on a collection inspired by California’s wine culture. The co-branded capsule, the campaign for which was shot on the vineyard’s 168-acre property in Saint Helena, Calif., is centered around premium Japanese selvedge denim for men and women. The collection features an aged weft inspired by the soil of the vineyard, uses wine-colored threads and includes a cork back patch instead of the traditional leather as a nod to winemaking. “I always start with something deeply rooted in California culture and lifestyle,” said Charles Sands, creative director at AG . “The idea of Napa Valley came naturally, the parallels between wine and denim felt effortless.…