Last year, I think I made some sort of pledge to myself to stop going places in schlumpy clothes and even to try not to bum around the house that way. It's not attractive, I don't like the idea of someone coming to the house unexpected and seeing me all sloppy, and it just makes me feel better to dress a bit.
I have seriously fallen off that wagon. I'm actually trying to rationalize taking the girls to ballet class while still in my super-sloppy big t-shirt and sweat pants. Argh. I must need new pants if I just can't stand the idea of putting them on.