Apparently, Kim Jong-Un (the present leader of the country) thinks he is the finest fashionista in the country and everybody should follow his style. North Korean men have 10 official haircuts to choose from. But the main rule is that the hair shouldn't be longer than 2 cm. The best thing you can do here is to make a similar haircut as the leader has. He and his fans call it "ambitious" (whatever that means…).
Somehow a better situation is with female haircuts. They have 28 approved alternatives for married women. Nevertheless, unmarried ones have to wear short hair. But it shouldn't be shorter than bob length (ugh, it's so hard). To avoid problems women should get married sooner and just copy the wife of Kim Jong-Un – remember that if you ever go to North Korea