There is this great boutique in Bahadurabad (sp?) where I got some really nice outfits from … I have the name at home, I will get it for you tonight. It is a bit pricey, but definitely worth it, especially if you can bargain with them.
Edit: Actually, someone mentioned it already in this thread. It is called, “Exclusive”. There are two branches, one in Clifton and one in Bahadurabad.