Learning to steal dresses

In one love comic a demonstration is given of how to steal a "very expensive gown, Paris original" from a department store:

"I'll slip it on in the dressing-room. They won't notice me! I'll put it in the box and walk out, while the saleslady is busy with someone else! . . . I walked out, trying to keep calm, trying to look and act natural . . . Nobody has seen me! Ohh! If I can only reach the door!"