[Candi]

Another vote for Mahmouds i've had some great bargains from here over the years. Hannan too has some great designs and she can adapt anything you see in her atelier so if you find a skirt to fit she'll re do the top. Try Eman she does good sturdy bras-the only trouble is sometimes her bras can give a bit of an "audience frightening effect" with a larger chest-but worth a look. i also like Amira at Pharonics.She also does good sturdy bras-and are a nice flattering shape for a larger bust.
With all the costumiers you have to make an appointment early on in your visit. At Mahmouds its a huge shop in the Khan el Khalili so you call in whenever. He is also great for props and accessories.