I agree that the goodwill is a good place to shop for in between clothes, especially work clothes. I'm sure it's different for women, but they usually have quite a good selection of dress shirts and pants.

My pants really started getting baggy after I shed about 20lbs. I don't mind when my jeans sag a little bit when I'm wearing casual clothes. But at work I'm supposed to dress business casual, so I didn't exactly want to have my slacks sagging down like Eminem while working :-)

I've got quite a bit of things there, and if you shop on certain days when everything thing is 50%, like holidays and sundays, it can be very cheap.

Plus you can find alot of older looking clothes so you can have that trendy retro look that everyone seems to like so much these days