Good for you.
I work with some grown women who have NO clue how to conduct themselves in public and consciously TRY to achieve the slattern appearance.
Looking disheveled and dirty is not feminine, and I really think it sends a wrong signal to guys.
The ladies I work with are loud and crass at all times so I avoid them. I always say they went to the Tonya Harding school of etiquette.
"Slattern" is a great word. I'm gonna use it more often!