Pervasive surveillance is a funny thing, and I wonder how it will affect dress. All those cameras are sharpening the difference between public and private spaces, so how about this scenario:
The beautiful people, who feel the most threat from paparazzi, bored security guards, and network-based voyeurs, cover up and disguise themselves in public places. Others soon follow the trendsetters, adopting the glamor of incognito. As status indicators, the well-toned face and body that come from the ample leisure time give way (outside of private spaces or posted no-camera zones) to a language of elegant, concealing garments, like you see in more modest countries.
Teenage girls become statistically less fearful about body image, and anorexia rates drop. Rifts develop between groups with different attitudes towards concealment. A tipping point is reached, and in the Prisoner's Dilemma of female modesty, power is taken back by the unionized-sisterhood strength of concealment over the winner-take-all competition of the freer playing field. Male attitudes toward women change as a result.
Meanwhile, law enforcement and the intelligence community don't want faces covered, with all their face-recognition and tracking software. So anti-concealment laws are put in place. The cool rebel kids (along with true criminals) also push in the direction of concealment. A mini industry springs up of wearable concealing devices, analogous to radar jammers and license plate concealers, with a similar "arms race" between laws and the innovations designed to circumvent them. Welcome to the see-easy; check your headcover at the door.
(I'm guessing that there's Sci Fi and Gender Studies out there that has a lot like this, and would love any pointers. Again, I feel lucky to access the firehose of BoingBoing community knowledge.)