The Muslim women of Istanbul are intriguing. I loved to notice the different colors and styles of scarves (or hijab). Sometimes the womens' patterned scarves totally clashed with what they were wearing, and others matched a scarf to their outfit just so. It's neat to see a tradition shared among women of several generations-- young and old.
I think the scarves really bring out their facial features, don't you think? There's no hair to hide behind.
I never got turned down so much when asking for a photo, but it was worth it for the handful I did get. [Rejection is painful at first, but after a few times of feeling dumb, you get used to it.]