Here's some surprising news: Elon Musk, 50, and Grimes, 33, have become parents again.

In an interview with Vanity Fair, Grimes confirmed the news when baby cries were heard coming from her home. "I don't know what I was thinking," said the 33-year-old singer, who appeared to be keeping the newborn a secret. 

Elon Musk and Grimes are parents again: Baby name revealed

After their son X Æ A-Xii, whose name is pronounced like this, Elon Musk and Grimes have welcomed a little daughter. She bears the unusual name Exa Dark Sideræl, but is nicknamed "Y." According to Grimes, the baby was born to a surrogate in December 2021.

Also interesting:

After a split shortly before the birth of their daughter, Grimes and the Tesla boss now have a slightly different kind of relationship.

Grimes explained to Vanity Fair: "I would probably refer to [Elon] as my boyfriend, but we're very fluid. We live in separate houses. We're best friends. We see each other all the time.... We just have our own thing going on."