A garment, such as a shirt, adapted to be worn on the upper body of a user includes a pair of adjacent front panels. Each panel terminates in an edge area and defines an upper neck area positioned in front of the neck of the user when the garment is worn. A closed passage is provided in each front panel adjacent the edge area of the front panel, and extends downwardly from the upper edge area of the front panel. A stiffener member is contained within each passage, and extends into the upper neck area of the front panel and downwardly therefrom within the closed passage so as not to be removable from within the passage. The stiffener members are configured and arranged so as to maintain the upper neck areas of the adjacent front panels apart from each other when the garment is worn.