Prince Street Pizza has built a cult following that includes some of Hollywood’s biggest names, but the company says the key to taking its famous New York slices nationwide is staying true to the original.The New York City-born brand has expanded from its original SoHo shop to roughly 20 locations across the U.S. and Canada, with parent company Best Buddy Hospitality CEO Lawrence Longo pointing to strong demand and a relentless focus on product quality as drivers of that growth."I think it’s important to stay close to the principles that made it special in the first place," Longo told FOX Busi...