An adjustable three dimensional mannequin head is provided for fitting a variety of head gear including but not limited to wigs, hats, caps, helmets and similar items. The adjustable mannequin head consist of a plurality of parts that move in a synchronized manner to expand and contract the size of the adjustable mannequin head to allow fitting to size; wigs, hats, and similar items. The mannequin head consist of four quadrants that make up the crown of the head. These four quadrants are mechanically adjusted by a single screw, which when turned will either expand or contract the adjustable mannequin head based on the direction the screw is turned. The adjustable mannequin head provides matching and fitting head gear to individual heads.