

- Grimes and Elon Musk have been the talk of the internet ever since they announced their new baby's name: X Æ A-12.
- But the name fell afoul of California birth certificate rules—which bar the inclusion of numbers.
- On Instagram, Grimes revealed the revised name: X Æ A-Xii.
Three weeks after welcoming baby X Æ A-12, Grimes revealed she and Elon Musk had changed their newborn's name, in accordance with California birth certificate rules which prohibit the inclusion of numbers. The new name's not all that different, and the pronunciation—which Grimes and Musk apparently haven't agreed on—is likely to be exactly the same.
In the comments of Grimes' latest Instagram post, one of her followers asked, "Did you change the baby name because of Californian laws? What is the baby's new name?" Grimes' response: "X Æ A-Xii." In a subsequent comment, she added, "Roman numerals. Looks better tbh."
A post shared by ☘︎𝔊𝔯𝔦𝔪𝔢𝔰࿎ (@grimes)
A photo posted by on
For more stories like this, including celebrity news, beauty and fashion advice, savvy political commentary, and fascinating features, sign up for the Marie Claire newsletter.
Stay In The Know
Marie Claire email subscribers get intel on fashion and beauty trends, hot-off-the-press celebrity news, and more. Sign up here.

Emily Dixon is a British journalist who’s contributed to CNN, Teen Vogue, Time, Glamour, The Guardian, Wonderland, The Big Roundtable, Bust, and more, on everything from mental health to fashion to political activism to feminist zine collectives. She’s also a committed Beyoncé, Kacey Musgraves, and Tracee Ellis Ross fan, an enthusiastic but terrible ballet dancer, and a proud Geordie lass.
-
Anne Hathaway’s Look Is Ushering Us Into Winter In the Most Beautiful Way
Angelic winter white is a trend we can get behind.
By Rachel Burchfield
-
Julia Stiles Steals the Show With Surprise ‘Save the Last Dance’ Cameo on ‘Saturday Night Live’
This is, randomly, the second time this week Stiles has reenacted a character of hers from the early aughts time period.
By Rachel Burchfield
-
Ryan Reynolds Says Gigi Hadid’s Clothing Line “Makes Damn Nice Clothes” in Supportive Instagram Post
Hadid’s response was equally as sweet.
By Rachel Burchfield
-
Sarah Hyland and Adam Devine Play 'How Well Do You Know Your Co-Star?'
The 'Modern Family' stars reunited for the 'Pitch Perfect' spinoff series.
By Brooke Knappenberger
-
The 78 Best Celebrity Couple Halloween Costumes of All Time
Honestly, we're impressed.
By Charlotte Chilton
-
Super Rare Photos of Queen Elizabeth as a Young Woman
From childhood snapshots to portraits as a young princess, beautiful and rare photos of the late Queen Elizabeth as a young woman.
By Mehera Bonner
-
King Charles III and Queen Consort Camilla's Relationship: A Timeline
With the passing of Queen Elizabeth II, Charles has ascended to the throne as king.
By The Editors
-
Who Is Next in Line for the British Throne, Explained
And yes—Harry and Archie are still in the line of succession.
By Andrea Park
-
Who Is Alexandria Ocasio-Cortez's Fiancé Riley Roberts?
AOC's husband-to-be is an "easygoing redhead" who lives with her in D.C.
By Katherine J. Igoe
-
68 Times the Kardashians Posed Fully Nude and Owned It
And we mean fully nude—as in, not a shred of clothing.
By Bianca Rodriguez
-
Who Is Jonathan Owens, Simone Biles's Fiancé and NFL Player?
"The easiest yes!" Simone wrote about the couple's engagement.
By The Editors