Why is it usually considered poor form to wear the same clothes two days in a row?

Or even the same clothes to a guest’s house party, and then the same clothes to another party thrown by the same guest a year later?

I stopped in at the office yesterday for just a bit to discuss some stuff with my broker. I threw on a pair of jeans and a very comfortable, soft, long sleeved shirt, perfect for the cool weather. It’s a nice shirt.

Today I’m going in again for a while and I thought “To hell with it! I’m wearing the same shirt!” I put on different jeans because I threw the other in the dirty clothes basket, but that will probably go unnoticed.

I know it’s poor form, but today I don’t care. It’s just good for a Fluther question.