Re: karachi boutiques
i've heard good things about cynosure too.
also to add, for great kurtis to wear over jeans or pants, check out Threads. they have a really good collection and they're in the Defense and Hyderi area.
for really great semi-formal and formal outfits, check Bareeze. they have a separate section in-store for their ready-to-wear Chinyere Couture line and they're very good with having it fitted and tailored if either S, M, L don't quite fit. i almost bought this gorgeous outfit from them- it was 8000 rupees- but then i ran out of time and couldn't wait for them to fix the size for me! wahhhh :*(
also like someone else here said, Junaid Jamshed has some super nice stuff too- and i think their tailors are quicker to put an outfit together for you, so if your mom buys the fabric from them, they'll tailor it to your size/specs. their nicer pieces were around 6000 rupees.