How much does the son of the world's richest man pay for a haircut? Nothing... because his pop star mother, Grimes, does it herself! Elon Musk's baby mama shared the interesting results of baby X Æ A-12's DIY haircut on January 28. The singer shared several photos to her IG story that showed the little guy's ears getting lowered by his famous mommy. In typically Grimes fashion, the haircut wasn't your everyday boy's cut. In fact, it was inspired by her favorite 8th-century drama, "The Last Kingdom." Scroll down to see the cut!