Teen retailer PacSun has closed its doors after more than two decades at Westfield Montgomery mall. It’s unclear why this location has gone dark, as PacSun isn’t downsizing and teen stores appear to be thriving at the mall. American Eagle is in the midst of a major remodeling, Miniso just expanded, and teen-oriented shops like Lovisa, Papaya, Psycho Bunny, Kickz and Squishables have all joined the lineup in the past 12 months.