Elon Musk and singer Grimes welcome second child

Billionaire entrepreneur Elon Musk and the musician Grimes have had a second child, a girl they named Exa Dark Sideræl Musk – although the parents will mostly call her Y. Photo: AFP

Grimes and Elon Musk’s Christmas present was a new baby.

The once-and-apparently-future couple secretly welcomed a second child in December, the 33-year-old accidentally revealed to Vanity Fair in a new cover story published Thursday (March 10).