[[Doolittle] hurries to the door, anxious to get away with his booty. When he opens it he is confronted with a dainty and exquisitely clean young Japanese lady in a simple blue cotton kimono printed cunningly with small white jasmine blossoms. Mrs. Pearce is with her. He gets out of her way deferentially and apologizes]. Beg pardon, miss.
THE JAPANESE LADY. Garn! Don't you know your own daughter? (2.289-290)
Given the right circumstances, even the most superficial adjustment can lead to a profound and surprising change.
THE BYSTANDER. It's all right: he's a gentleman: look at his boots. [Explaining to the note taker] She thought you was a copper's nark, sir. (1.61)
We see here that identity can be determined by something as small as a pair of boots.