If you grew up watching The Thundermans, you probably still think of Kira Kosarin as Phoebe Thunderman, the teenage superhero trying to keep her family’s powers a secret. But life moves fast. Honestly, while fans were busy speculating about her dating life or hoping for a real-life romance with her co-star Jack Griffo, Kira was quietly building a life with someone else entirely.
So, let's get right to it. Is Kira Kosarin married? Yes. As of 2026, Kira Kosarin is officially married to musician and songwriter Max Chester. The couple didn't just have a flashy Hollywood wedding for the cameras, though. They actually kept things surprisingly low-key for a while, letting fans in on the secret only after the knot was already tied.
The Secret Wedding and the Big Reveal
Kira and Max officially announced their marriage on July 17, 2024.
It was one of those "secret" celebrity weddings where they basically waited until they were good and ready to tell the world. Kira posted a series of stunning photos on her Instagram, showing the two of them in wedding attire in a simple, open field. No massive cathedral, no 500-person guest list—just them and the scenery.
Kira simply captioned the post with a ring emoji and tagged Max.
Interestingly, if you’re a real eagle-eyed fan, you might have caught the news before she even said it. Just a few days before the announcement, Kira attended the 2024 Kids' Choice Awards with her Thundermans family. If you look at the red carpet photos from that night, she was actually wearing her wedding band. Most people missed it because they were focused on the Thundermans Return hype, but the evidence was right there on her finger.
Who is Kira Kosarin’s Husband, Max Chester?
Max Chester isn't just "the guy Kira married." He’s an English singer-songwriter and musician in his own right. He was born on October 30, 1997, making him almost exactly the same age as Kira (she’s only about three weeks older than him).
They are honestly kind of a creative power couple. They don't just live together; they work together.
- Musical Collaborations: They did a cover of "Location Unknown" by HONNE back in 2020 that went viral among her fanbase.
- Songwriting: Max helped co-write "Parachute (Plan B)" on her 2022 EP, Something New.
- Directing: He even stepped behind the camera to direct the music video for her 2023 single, "Sunday Best."
It’s the kind of relationship that seems built on a shared love for the arts, which is probably why they've lasted as long as they have in an industry that usually chews up young couples and spits them out.
A Timeline of Their Relationship
To understand how they got here, you have to go back to the start of the 2020s.
They officially started dating in July 2020. It was a weird time for everyone, obviously, but they actually went through the "COVID test" together early on. In December 2020, Kira shared that they both tested positive for the virus and spent their quarantine taking care of each other.
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That kind of high-stress environment early in a relationship usually does one of two things: it breaks you, or it cements you. For them, it was clearly the latter.
Three years later, in July 2023, Max took Kira to Santorini, Greece. This wasn't just a random vacation. Kira had once told a story about how her parents went to Greece before she was born and made a video for her "future self." She had decided as a teenager that she’d only go to those same islands once she found her "forever person." Max clearly took the hint. He proposed on that trip, and she shared the news with the caption, "a million times yes."
One year after the engagement, they were married.
Addressing the Jack Griffo Rumors
We have to talk about it because, for years, the internet was convinced Kira and Jack Griffo (who played her twin brother Max Thunderman) were a couple.
They weren't.
They have always been incredibly close, and they definitely played into the "BFF" energy on social media, but they never actually dated. In fact, Jack was one of the first people to congratulate her when she got married. Her "TV parents," Rosa Blasi and Chris Tallman, also flooded her comments with love when the wedding news broke. It’s clear that while the fans wanted a romance, the cast saw her and Max as the real deal from the start.
What's Next for the Couple?
Currently, in 2026, Kira is balancing her music career with the ongoing success of the Thundermans franchise revival. She and Max continue to live in Los Angeles, though they often travel back to the UK (where Max is from).
They haven't made any big "family planning" announcements, and honestly, they seem pretty content just being a young, married couple focused on their respective careers. Kira has been very vocal about how much she values her privacy, so while she shares the occasional "husband appreciation" post, she keeps the intimate details of their marriage off the timeline.
If you want to keep up with what Kira is doing now, your best bet is to follow her on TikTok or Instagram, where she’s most active. You’ll see plenty of behind-the-scenes clips of her recording music—usually with Max playing guitar or helping with the production in the background.
Practical Next Steps for Fans:
- Check out the "Location Unknown" cover on Kira’s YouTube channel to see their early chemistry.
- Watch The Thundermans Return to see her latest acting work.
- Listen to the Something New EP to hear the songs they wrote together.