Grimes Reveals She and Elon Musk Welcomed Second Child Together, Daughter Exa Dark Sideræl

In a new cover story feature, Grimes opens up about her upcoming new album, as well as her and Musk's decision to secretly welcome a second baby together.

Elon Musk and Grimes are on the red carpet together

Image via Getty/Kevin Tachman/Vogue

Elon Musk and Grimes are on the red carpet together

With a new album on the horizon tentatively titled Book 1, Grimes fans are soon set to enjoy another sonic feast. And in a new interview discussing the upcoming “space opera,” the acclaimed Art Angels crafter has—perhaps inadvertently—revealed that she and Elon Musk recently welcomed a second child together.

When speaking withVanity Fair for a cover story feature, out Thursday, Grimes was asked if she has “another baby” in her life after writer Devin Gordon picked up on sounds in the house that would signal such a presence. At first, Grimes stated that she’s “not at liberty to speak on these things,” instead shifting the talk to her and Elon’s previous child together, X Æ A-12 (a.k.a. X).


More noises in Grimes’ house, however, ultimately made the new baby’s presence obvious. As revealed in the VF piece, Grimes and Musk this time opted to use a surrogate, which helped them keep news of the child (a daughter) away from public view for a longer period of time. As Grimes would later explain to the publication via text, her and Musk’s daughter’s full name is Exa Dark Sideræl Musk, though she also goes by, simply, Y. 

“I was fighting for Odysseus Musk,” Grimes said of the name, adding that “a girl named Odysseus is my dream.”

Among the intended references featured in Y’s name are Grimes’ personal favorite Lord of the Rings character, Galadriel. The child was born in December, which (the new piece notes) is notably around the same time that Grimes made the choice to relocate to Austin, Texas in a “full time” capacity.


As for her and Musk’s current relationship, Grimes is quick to point out that there is “no real word” to describe it.

“I would probably refer to him as my boyfriend, but we’re very fluid,” she said. “We live in separate houses. We’re best friends. We see each other all the time…. We just have our own thing going on, and I don’t expect other people to understand it.” She and the SpaceX founder, meanwhile, have “always wanted” at least “three or four” children together.

The full interview is available here and also includes some insight on Book 1, the narrative of which is set in the distant future and partially inspired by simulation-based discussions with Musk, as well as remarks from Grimes addressing those who have argued that she’s undergone a “class traitor” transformation in recent years.

“I was deeply from the far left and I converted to being essentially a capitalist Democrat,” Grimes said. “A lot of people are understandably upset.”

The upcoming Book 1, expected this year, follows 2020’s well-received Miss Anthropocene. In January of last year, the latter—featuring the singles “Violence” and “Delete Forever”—was revisited via a Rave Edition release.

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