Isaiah Hartenstein Wife
Isaiah Hartenstein wife is Kourtney Kellar, an American model and social media influencer from Texas. Her exact date of birth has not been publicly confirmed. She is a Texan model from a military family who was living in Dallas when Hartenstein first messaged her.
Isaiah Hartenstein is a German-American center in the NBA. He spent two seasons with the New York Knicks, then signed a three-year, $87 million contract with the Oklahoma City Thunder. He was part of the Thunder’s 2025 championship run, which put his family in the spotlight even more.
Fans often ask who is behind the 7-footer. In this guide, we cover Kourtney’s background, her modeling work, how the two met on Instagram, their California wedding, their baby boy, and her online presence. A quick facts table and an FAQ are at the end.
Who Is Kourtney Kellar? Isaiah Hartenstein’s Wife Explained
Kourtney Kellar Hartenstein is an American model and content creator. She is Texan, and Dallas is where she was based when she met her future husband. Her family has a military background. Some fan sites list Dallas as her birthplace, but major outlets don’t confirm it, so treat it with care.
Her date of birth is not public, and she has not shared it in major interviews. We chose not to guess it. Her education details are also not publicly documented. What is clear is that she started modeling young and built a career on her own before she met an NBA player.
Her name sometimes appears as Kourtney Hartenstein. She took her husband’s surname after the wedding. She still uses Kellar for modeling and on social media, so both names lead to the same person.
Kourtney Kellar’s Career: What Isaiah Hartenstein’s Wife Does
Kourtney works as a model and influencer. She has been linked with The Sculp Agency since 2013 as a commercial print model.
She has also worked as a ring girl at professional boxing events and has modeled for brands including Guess, Fashion Nova and Ignite. This mix of fashion work and live-event work gave her a following long before she was known as an NBA wife.
Today, much of her work happens online. She partners with brands and shares lifestyle content. She also posts about life as the partner of a pro athlete, which fans of the Knicks and Thunder enjoy.
Her net worth has not been officially reported, and any exact figure you see online is an estimate at best. Isaiah’s contract gives the family a strong income, but we can’t separate her earnings from his with any accuracy.
How Did Isaiah Hartenstein and Kourtney Kellar Meet?
Their story began on Instagram in 2019. Hartenstein sent her a message saying she had a beautiful smile, along with his favorite photo from her feed. Kourtney told the New York Post that the message stood out from the usual comments she received.
They started with FaceTime dates and met in person a few weeks later. Kourtney has joked that she wanted to make sure he was a safe person before meeting up.
Here is the timeline:
- 2019: First message on Instagram, followed by video calls and a first meeting.
- 2019–2022: The couple dated while Isaiah moved between NBA teams.
- April 2022: They got engaged in Malibu, California.
Kourtney was reportedly engaged before to country singer Chase Bryant, from 2015 to 2018, but that relationship ended well before she met Isaiah.
Isaiah Hartenstein Wife: Marriage & Wedding Details
The couple married in July 2023 in Newport Beach, California, with about 60 guests. One source gives the date as July 29, 2023, but few outlets confirm the exact day.
It was a modest celebration rather than a huge star-studded event. Isaiah had just finished a season with the Knicks, and the wedding came at the start of the offseason, so friends and family could attend.
Kourtney later shared wedding moments with her followers. She has also kept much of the planning private, which fits how the couple handles the spotlight.
Children & Family Life of Isaiah Hartenstein and Kourtney
The couple has one child, a baby boy. Kourtney announced the pregnancy in a TikTok video, and Madison Square Garden played a part in the reveal. The baby arrived around the time Isaiah moved from New York to Oklahoma City in 2024.
Some fan sites say the boy’s name is Elijah James, but the couple hasn’t confirmed this in major outlets, so we won’t state it as fact.
The family has settled into life in Oklahoma. They moved there for Isaiah’s contract with the Thunder, and they were welcomed warmly by the team when they arrived with their newborn. Kourtney regularly attends games and posts about family life, but she shares only selected moments and keeps most details private.
Kourtney Kellar on Social Media
Kourtney is active on Instagram and TikTok. One report counted about 717,000 Instagram followers and nearly 450,000 TikTok followers with over 24 million likes. Those figures are from earlier in her career, so they have probably grown.
Her content falls into three groups:
- Fashion and modeling photos.
- Game-day and “NBA wife” content from Knicks and Thunder games.
- Family updates, including her son and life in Oklahoma.
Her handle is @kourtney_kellar on Instagram.
Quick Facts: Isaiah Hartenstein’s Wife
| Detail | Info |
|---|---|
| Full Name | Kourtney Kellar Hartenstein |
| Date of Birth | Not publicly confirmed |
| Nationality | American |
| Profession | Model and social media influencer |
| Married to | Isaiah Hartenstein |
| Marriage Year | 2023 (Newport Beach, California) |
| Children | One son |
| Net Worth | Not officially reported |
FAQ: Isaiah Hartenstein’s Wife
Q: What is Isaiah Hartenstein’s wife’s name?
A: His wife is Kourtney Kellar, also known as Kourtney Hartenstein. She is a model and social media influencer from Texas.
Q: How old is Kourtney Kellar?
A: Her date of birth has not been publicly confirmed, so her exact age is unknown. She has modeled since at least 2013.
Q: What does Kourtney Kellar do for a living?
A: She is a model and content creator. She has worked with brands like Guess and Fashion Nova and has appeared as a ring girl at boxing events.
Q: When did Isaiah Hartenstein and Kourtney Kellar get married?
A: They married in July 2023 in Newport Beach, California. About 60 guests attended.
Q: How many kids do Isaiah Hartenstein and Kourtney Kellar have?
A: They have one son, born around 2024. The couple has kept most details about him private.
Conclusion
Isaiah Hartenstein wife Kourtney Kellar is a Texas-born model and influencer who built her own career before she met an NBA player. What started with a friendly Instagram message in 2019 grew into an engagement in Malibu, a wedding in Newport Beach, and a young family in Oklahoma City. She supports Isaiah at his games while keeping her own career going. By all accounts, they are a close and happy couple.
