Stand-Up Collar Button-Front Casual Dress | 3 ColorsStand Up Collar Button Front Casual Dress Clean lines, a considered collar, and a button front that means business in the most effortless way possible. This stand up collar button front casual dress is the kind of piece that looks like you put thought into your outfit without actually having to. The stand up collar also known as a mandarin or band collar is a structured, minimal neckline detail that adds a modern, fashion forward quality to the dress