I have a theory.

If you always look nice, no one ever notices you're trying hard to look nice, but they notice when you look like straight up poo. On the other hand, if you always look like a scum bag and for some reason you happen to decide to get all made up and look nice, people notice and they say you look nice. I definetly think its better to hear someone say "Oh you look nice," than hear someone say, "Dang, you look like poo."