in Islamabad, you can find boutiques in Jinnah Super like Generations, Sobia Nazir, JJ, shaposh and on the right side of pappa sallis there is a lane of different boutiques then there is one opposite to chen one..in short ...you just have to go to Jinnah Super and surf through the wide range of boutiques....
Then in F-10 you can find a lot of shops for loose material which you can get stitched acc to your own choice....bareeze/chinyere and some other boutiques are also there.....
when i went to Pakistan in the summer I did most of my shopping from China Market in Pindi...mainly silks sold here. Some very nice silks, velvet can be found here. Quality by in large was good but a couple of things I bought turned out to be money wasted. Rabi Centre is worth a visit....I wasn't impressed with Jinnah Super. Bareeze was overpriced.