i did talk about this in detail in the Body Care thread, but i can add more here!
Dry cleaning in general should be avoided. Even using "green" dry cleaners is still a wasteful situation. For myself, I can get away with clothes that are wash and wear - I work at home. I have even given up using a dryer (Arizona is usually dry enough).
It's not necessary to wash everything once it's been worn once. Unlike panties or socks, a shirt, bra or pair of pants are usually ok between several wearings.
I don't shower every day, which saves a lot of water (and also is better for my hair and skin).