Baby Hair

My son is 4 months and still hasn't fully got all his hair yet. He has this big patch at the back and then it's starting to grow in at the front but I'm just wondering when did everyone's babies hair grow in?

    My babies all had a full head of hair when they were born but my oldest lost most of it and was bald until he was about 6 months old. I have a niece that looked bald until she was two. Now she has beautiful blonde hair. Have patience.
    About Lis Outland
    Current: Selma, North Carolina
    Birth: December 31
    On since: Jan 11, 2014
    I'm the Mummy of a very beautiful little boy named Jayson. He and his daddy are my world. I'm an Aussie gal living in the USA.