pixie cut       
noun [ C ] uk/ˈpɪk.si ˌkʌt/ us/ˈpɪk.si ˌkʌt/ (also pixie crop, /ˈpɪk.si ˌkrɒp/ /ˈpɪk.si ˌkrɑːp/)
 精灵头(一种很短的女士发型)
a hairstyle for women in which the hair is cut very short 
  My bravest hairstyle was a very short pixie cut. 我最勇敢的发型是一个很短的精灵头。 
 The actress arrived at the awards sporting a chic new pixie crop. 在颁奖典礼上,这位女演员以一头新剪的别致精灵短发亮相。 
 - More examples
 - Even pixie cuts are soft and feminine.
 - The model says her pixie cut is very easy to maintain.
 - She was reading a magazine spread about how to style pixie crops.