What is the ruling on piercing girls ears?

Question 30: What is the ruling on female circumcision? Is it permissible or Makrooh (disliked) to pierce women’s ears, and if it is Makrooh, is that to give a warning or to forbid it?

Answer: All Praise be to Allaah Alone and peace and blessings be upon His Messenger, his family and Companions. Circumcision is regarded as an honor for women… read more here.