Abstract: A fastening device for securely and reliably joining parts of clothing, such as shirt collars, shirt cuffs, or the like. The fastening device is adapted to be inserted through a sturdy and preformed opening in the clothing, such as a buttonhole. The device incorporates a sturdy base member having a stem and a bar-like clothing engaging head which is biased by springs. The head pivots so as to grip the clothing parts to be joined, while the springs firmly position the head in a parallel orientation to the base member, with the parts of clothing to be joined captured therebetween. The springs also provide automatic pivoting of the head so that the device can be conveniently and easily used one-handedly. The device may be ornamentally decorated with distinctive and visually appealing insignia.