A clothing illumination device is switchable between illumination with visible light only and illumination with visible light mixed with ultraviolet light. The clothing illumination device also has an LED light source and an IC tag reader. A clothing illumination system has a first and a second clothing illumination device which are each switchable between illumination with visible light only and illumination with visible light mixed with ultraviolet light, and which operate in a fashion coordinated with each other to perform the switching.