The law was officially rolled out two weeks ago in Pyongyang, but is now being enforced across the country.
Unfortunately, not everyone may be happy about their new haircut. A former North Korean citizen now living in China told BBC that the ' Kim Jong Un haircut' is unpopular because it resembles the hairstyle of Chinese smugglers.
Earlier, the North Korean government had imposed a law authorising just 28 kinds of haircuts - 18 for women and 10 for men. It also encouraged people to keep their hair short to 'follow the socialist lifestyle'.
North Korea is considered one of the most repressive regimes in the world, ruled by a totalitarian government that has gained notoriety for promoting nuclear weaponisation, allegedly developing concentration camps and conducting sham elections, among other things.