Speeding Ticket

A blond woman was speeding down the road and got pulled over by a female cop,also a blond. the cop asked the blond for her license ,so the driver asked,"Whats it look like"? The cop said its a little rectanguler thing with your picture on it.the driver looked in her purse and pulled out a makeup mirror and handed it to the cop. the cop looked at it and said "Oh ,I didnt know you were a cop,you can go"