Shanghai is cracking down on its most tenacious fashion trend. In preparation for the 2010 World Expo, the municipal government has launched a campaign to eradicate running red lights and wearing pajamas in public.

For those of you who have not been wowed by the most cosmopolitan of Chinese cities, Shanghai is known for, among other things, its middle-aged women who saunter onto the street in their sleepwear. Some even venture as far as the subway or the shopping mall.

As the slogan, "Do not go outdoors in pajamas, be a civilized person for the Expo," demonstrates, this tradition does not dovetail with the ideal projection of an international metropolis.