NEW YORK — Perry Ellis is not a brand that makes men nervous or causes them to titter. Even if a work-a-day guy doesn’t wear Perry Ellis clothes, he probably recognizes the name from those times he has wandered through a department store looking to stock up on dress shirts. Perry Ellis is not niche; it is mass. And its creative director, Michael Maccari designed a spring 2016 collection that was welcoming to a wide swath of men. Board shorts, crewneck sweaters, lean — but not tight — suits. Rich colors but nothing too psychedelic.
It is saying dress shirts , and it looks like as if the word *dress** acts as an adjective. What does the writer really mean by saying dress shirts?
Is stock up here s noun?
Thank you in advance.