nursing uniforms

My brother is working as OR nurse in a hospital and mostly my friends are nurses too. In a certain work area, you have different duties. There is Pediatrics, Operating Room, Deliver Room, many more. What I have noticed when I gave birth to my 2nd child, not all nurses have the same nursing uniforms. Every department have different color of their scrubs. The first nurse uniforms were derived from the nun's habit. Historically, a typical nurse uniform consisted of a dress, pinafore apron and nurse's cap. In some hospitals, however, student nurses also wore a nursing pin, or the pinafore apron may have been replaced by a cobbler style apron. This type of nurse's dress continues to be worn in many countries.