Knicks' Isaiah Hartenstein marries model Kourtney Kellar

Jun 26, 2023

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Wedding bells weren’t just ringing for Jalen Brunson and his longtime girlfriend, Ali Marks, over the weekend.

Brunson’s Knicks teammate, Isaiah Hartenstein, married his model fiancée, Kourtney Kellar, in a dreamy California ceremony, according to social media posts shared Sunday.

Hartenstein, who joined the Knicks in free agency last year, can be seen holding hands with Kellar at the altar in one snap, before celebrating with loved ones at an outdoor reception.

Celebrity trainer Pierre Russell posted an Instagram video recapping the nuptials, noting the Hartenstein-Kellar wedding “was everything it was supposed to be!”

“Congratulations @kourtney_kellar and @ipjh55,” Russell captioned the clip, along with the hashtags “wedding,” “California,” “newlyweds” and “Hartenstein.”

The 25-year-old Hartenstein later replied, “Family,” with two prayer hands emojis.

A post shared by NOT THE AVERAGE TRAINER! (@pierre__official)

Kellar and Harternstein, who have been together since 2019, also added a sweet touch to their wedding cake: a topper that featured themselves and the family dog.

The couple’s scenic nuptials took place a little over a year after announcing their engagement in April 2022.

“Excited for the next part of our journey!! Love you,” Hartenstein gushed on Instagram at the time.

He popped the question to Kellar while at the beach in California.

Two months later, Harternstein agreed to a two-year, $16 million deal with the Knicks.

The 7-foot center, who began his NBA career with the Houston Rockets after being selected in the second round of the 2017 NBA Draft, celebrated his “next chapter” in a July 2022 Instagram post.

“Excited for the next chapter in my career in NYC!! Ready to play my heart out for the city let’s get it,” he wrote.

Hartenstein averaged five points, 6.5 rebounds and 1.2 assists per game last season.

When he and the Knicks reached the postseason this past spring, Kellar cheered on the team at Madison Square Garden.

“That feeling walking into Madison Square Garden to watch your fiancé play in the playoffs,” she wrote on social media in May.

The Knicks reached the second round of the playoffs before being knocked out by the Miami Heat in six games.