Grimes  and Elon Musk's second child 

In Vanity Fair's April 2022 cover story published Thursday, the singer said she and Musk welcomed their second child

Grimes and Musk welcomed their second child, who was born in December 2021, via surrogate.

The name of their second child is Exa Dark Sideræl, nicknamed "Y," Grimes told the magazine.

Exa refers to a supercomputing term exaFLOPS and Dark represented "the unknown," according to Grimes.

"People fear it but truly it’s the absence of photons," she said. "Dark matter is the beautiful mystery of our universe."

"We've always wanted at least three or four," Grimes said.

Click Here