Some expensive, trendy brands here score less on ethical ratings than Kmart.
ETA - the other thing is as someone pointed out in another thread, my kids' school have the uniforms made by an Australian lady, the uniform shop is at the school, the labels say "made in Australia" which I was amazed when I saw as that's not something you see on clothing these days but then where is the fabric produced and made? Sure, some Aussie woman is earning a decent living but what about the fabric makers?
Unless we are all making our own materials and sewing our own clothes, then we are probably all guilty of wearing clothing that come from slave labour. Whether it's a $1000 dress or $10 dress!