Abstract: Mannequin attachment devices are disclosed that are designed to be operationally connectable to a mannequin for supporting, stabilizing, and giving shape to headwear or a hood of a garment worn by the mannequin. Exemplary mannequin attachment devices include a lower portion operative to hold the device in a substantially fixed position upon an associated mannequin; a substantially hemispherical upper portion; and an intermediate portion extending between and interconnecting the lower portion to the upper portion. Systems are also disclosed that include such a mannequin attachment device and a mannequin having at least a neck structure and a shoulder structure. Methods of manufacturing such a mannequin attachment device are also disclosed, which methods include providing a mannequin, obtaining data regarding the mannequin, designing a mannequin attachment device shaped complementary to the mannequin, and producing the mannequin attachment device.