A stretchable shirt collar includes an inner collar band and an outer collar band. The inner collar band includes an exposed layer and a hidden layer. A stretchable inner collar interlining is disposed intermediate the exposed layer and the hidden layer of the inner collar band, and is fused to the exposed layer. The outer collar band includes an exposed layer and a hidden layer. A stretchable outer collar interlining is disposed intermediate the exposed layer and the hidden layer of the outer collar band, and is fused to the exposed layer. The stretchable inner collar interlining and the stretchable outer collar interlining comprise a layer of knit interlock fabric laminated to a layer of stretchable film adhesive. The elements of the stretchable shirt collars are sewn together with stretchable thread.