A single piece of collar support strap to package collar portion of a shirt is described. Shirt collars are traditionally packaged in a way to reflect the collar's positioning and shape in actual use. Conventional methods employ multiple pieces of support items placed in different locations. A collar support strap provides the positioning of the collar in a packaged shirt not only through a single piece item, but also provides ease of packaging by avoiding multiple steps of operations to package the shirt. The collar support strap enables adjustment to varying collar sizes, anchoring to the collar button, and accommodation of the different collar types.