The apparel industry is dirty. To be as sustainable as you possibly can, you should go nude. Great if you live on a nudist colony, but probably not so realistic otherwise.
Your next best bet is to wear sustainable clothing—like the 100% organic cotton tee that'll rep this design from @realfunwow in our new spring line. Bonus: Wear it to a party where you don't know anyone...it's sure to make a great conversation starter.