Re: khaadi khaas
They are different brands owned by the same designer Shamoon Sultan. Khaadi deals with unstiched fabris mainly and you can also find cheap kurtas and other accesories in their stores.
Khaadi Khaas is meant to be a little more upscale, with a ready-to-wear formal line. They have a separate outlet for their khaadi khaas range - i've been to the one in Karachi and some of the outfits are really funky and amazing, but a little on the expensive side.