People are constantly searching for "Elon Musk Xavier age" like they’re trying to solve a math problem that doesn't quite add up. It’s understandable. The Musk family tree is less of a tree and more of a sprawling, chaotic vine that grows a new branch every time you blink. But when we talk about Xavier, we aren't really talking about a person who exists by that name anymore.
Honestly, the story isn't just about a birthdate. It’s about a massive, public rift between the world's richest man and his eldest daughter.
The Basics: How Old is She Now?
Let's get the numbers out of the way first. Vivian Jenna Wilson—formerly known as Xavier—was born on April 15, 2004.
If you’re doing the quick math in your head right now (it's 2026), she is 21 years old. She shares this birthday with her twin brother, Griffin. They were the first successful births for Elon and his first wife, Justine Wilson, following the tragic loss of their firstborn son, Nevada, to SIDS in 2002.
It’s wild to think about how much has changed since that 2004 arrival. Back then, Tesla was a struggling startup and SpaceX was barely a glimmer in the desert. Now, Vivian is an adult who has effectively "deleted" her father from her life.
Why the Name Change Happened at 18
The moment Vivian hit the "legal age" mark, she didn't just buy a lottery ticket or go to a club. She went to court.
In April 2022, just after her 18th birthday, she filed a petition in Los Angeles County Superior Court to legally change her name and gender. The documents weren't just a formality. They contained a stinging sentence that went viral: "I no longer live with or wish to be related to my biological father in any way, shape or form."
💡 You might also like: Birth Date of Pope Francis: Why Dec 17 Still Matters for the Church
She took her mother’s maiden name, Wilson. She became Vivian Jenna Wilson.
Elon’s reaction? It wasn’t great. He’s famously blamed "the woke mind virus" for the estrangement. In interviews, most notably with Jordan Peterson, he’s gone as far as to say his "son is dead," claiming he was "tricked" into signing documents for her transition. Vivian, for her part, has pushed back hard on Threads and in interviews with Teen Vogue, calling him "cold," "cruel," and a "serial adulterer."
Growing Up in the Shadow of X
You've gotta wonder what it’s like growing up with a dad who is obsessed with the letter X.
Vivian and Griffin spent their early years at Mirman School and later Astra Nova (the school Elon built on the SpaceX campus). For a long time, the public didn't know much about them. They were just "the twins."
But as they reached their late teens, the friction became undeniable. While Elon was pivoting toward more conservative politics and railing against gender-affirming care, his own daughter was moving in the opposite direction.
A Quick Breakdown of the Siblings (The "Musk-Eteers")
It’s easy to lose track of where Vivian fits in the lineup, so here’s the current 2026 roster of the older kids:
📖 Related: Kanye West Black Head Mask: Why Ye Stopped Showing His Face
- Nevada Alexander: Passed away in 2002.
- Vivian Jenna Wilson & Griffin Musk: The twins, born 2004. Both are 21.
- Kai, Saxon, and Damian Musk: The triplets, born 2006. They are 20.
Then you have the younger crew with Grimes and Shivon Zilis, including X Æ A-Xii, Exa Dark Sideræl, and the newer arrivals like Techno Mechanicus (Tau) and baby Seldon Lycurgus. It's a lot.
Where is Vivian Now?
Last we heard, Vivian has been living her own life, largely independent of the Musk billions.
Reports from late 2024 and 2025 suggested she was considering moving out of the United States entirely, especially following the political shifts in the country that her father heavily supported. She’s been spotted in Tokyo and has built a significant following on TikTok and Threads under the handle vivllainous.
She’s made it very clear: she doesn’t want the money, and she definitely doesn't want the name.
The "Deadnaming" Controversy
One of the biggest misconceptions when people search for "Xavier Musk age" is that they are looking for a boy.
Using that name is what’s known as "deadnaming"—using the name a trans person used before they transitioned. While Elon continues to do it in public forums, Vivian has asked the world to stop. For her, "Xavier" is a ghost.
👉 See also: Nicole Kidman with bangs: Why the actress just brought back her most iconic look
It’s a heavy situation. You have a father who believes he’s saving civilization by colonizing Mars and increasing the birth rate, and a daughter who sees him as the literal embodiment of the things she wants to escape.
What This Means for the Musk Legacy
Elon often talks about his children as the future of humanity. He’s even reportedly built a massive compound in Texas to house them all.
But Vivian isn't going.
This rift highlights a massive "human" failure in a man who is brilliant at engineering but, by his own admission in Walter Isaacson’s biography, struggles with human emotions. As Vivian enters her 20s, she represents the one thing Elon Musk can't control with a line of code or a billion-dollar buyout: a person's identity.
Actionable Takeaways for Following the Story
If you're trying to keep up with the Musk family saga without getting bogged down in rumors, here is what actually matters:
- Check the Sources: When reading about Vivian, look at her actual social media posts on Threads or TikTok (vivllainous). She is very vocal about her own narrative.
- Understand the Legalities: In California, name and gender changes for adults are public record but personal. Respecting the current name is generally the standard for journalistic accuracy in 2026.
- Follow the Timeline: Vivian's age (21) and the triplets' age (20) mean the first generation of "Musk kids" are now adults with their own legal standing. Expect more public moves from them as they navigate their inheritance or lack thereof.
The drama isn't going away. If anything, as the younger kids get older, the contrast between Elon's public "pro-natalist" stance and his actual relationships with his adult children will likely become the biggest story of his personal life.