Oh dear

A woman comes in to buy a bottle. She orders and I go to get it. So far so good, no worries. I come back to wring up the item and she has decided to changer her dress, right in the store. I can't help but think, "oh dear." You see, she changing her dress wasn't a great idea but the fact that she was totally naked underneath made it unbearable. She just looked at me and kept smiling and told me she would be with me in a moment. I could only muster, "alrighty then."  Why does a woman come in and choose to changer her clothes in a public store? Why does a woman choose this when she knows she's naked? These are just two questions I actually listened to my better judgement and I did not ask why.