The Souks are awash with them. Any souk really. On a cautious note though, I was once sold an Indian outfit when what I needed was an Egyptian robe! You might want to get an idea of what to look for from Google before descending on the shops.

Better still ask any Pakistani or Indian parents to show you some examples or pin point what's Kashmiri and what's not from a site such as this:

http://www.rhythmicartscenter.com/costumes.php

Good luck and happy shopping!