It's truly the best baby name.
Nearly a year after Khloe Kardashian welcomed her second child via surrogate with ex Tristan Thompson, their baby boy's name has finally been revealed as Tatum.
She shared the news during the season three premiere of The Kardashians May 25, adding, "Naming a human is really hard."
Khloe—who also shares 5-year-old daughter True Thompson with the athlete—confirmed in April that her 9-month-old son's name would stick with tradition of starting with a "T" to match their little girl's moniker.
But while her kids have the same initials, Khloe said in the Hulu episode that she feels less connected to Tatum than she did with baby True due to the surrogacy process, noting, "It's a mindf--k. It's really the weirdest thing."
As for why it took her so long to announce her son's name? The 38-year-old previously explained that it took some time for her settle on what to call him.
"I wanted to meet him and feel him out a little bit," she said on the April 5 episode of The Jennifer Hudson Show. "At first, he didn't have a name. Then, he's been named but I've been waiting for the premiere of our show and I didn't know it was going to be this far out."
Khloe added of her baby boy, "He is a little chunk... I wouldn't have it any other way."
What else is there to know about Tatum? Well, his nickname appears to be Tate, as Khloe's bestie Malika Haqq teased in a recent Instagram comment. And according to Kim Kardashian, Tatum looks "just like" their brother Rob Kardashian.
As for Khloe and Tristan, he's still holding out hope she'll take him back. "I think he thinks, 'Let's just ride this out,'" she confessed in an April teaser for The Kardashians, "but no. No chances."
After all, their son's arrival didn't help them get back together. "There is no chance of reconciliation," a source told E! News in July when news broke that Khloe and Tristan were expecting. "Khloe has fully moved on and has been very clear in that."
The baby was conceived in November 2021, days before Khloe learned that Tristan had gotten Maralee Nichols pregnant. (Their son Theo was born in December 2021, and the basketball player is also dad to Prince, 6, with ex Jordan Craig.)
A separate insider told E! News that Tristan's paternity scandal is what led the Good American founder to keep the news of baby no. 2, who was born in July, under wraps for so long.
"Khloe kept the pregnancy a secret to protect surrogate privacy and safety," the source told E! News last year, "and to protect her mental health from judgement from the public as a result of Tristan's actions."
During a tell-all with ABC News in April 2022, Khloe acknowledged that she and Tristan aren't a good match romantically, but continued to praise his parenting abilities.
"I still think he's a great guy, and he's a great dad," she told Robin Roberts. "He's just not the guy for me."
And at this point, she's tired of the "narrative" that she and the NBA player are getting back together, once again shutting down speculation just eight days ago.
"Stop pushing this narrative," the reality star wrote in an Instagram comment May 16. "It's tiring. But I suppose You guys will continue the narrative you want regardless of what I say so what's the point. It's exhausting."
One thing you can believe? How much she values their co-parenting relationship.
"You are truly the best father, brother & uncle," Khloe wrote to her so-called "baby daddy" on his birthday this year. "Your love, attention, silly dances, hugs, carpool rides, bed time rituals, the way u show up for them. All of the above means more than you'll ever know to your family of littles."
Their current dynamic will be explored on season three of The Kardashians, which premiered on Hulu May 25.
In the meantime, keep reading to see all their family photos.
Hot Diggity Dog
Tristan shared the sweetest photo at Tatum's 3rd birthday part in July 2025, with the birthday boy posing alongside True, Prince and their cousin Dream.
Let Them Eat Cake
Prince and Tatum were all smiles as they shared a slice of cake during the toddler's 3rd birthday celebration.
"Swaggy T"
In April 2025, Khloe shared an adorable snapshot of her and "Swaggy T."
Hearts Full of Love
So much love in this precious pic from Valentine's Day 2025
Cousin Time
True and Tatum were all smiles as they hung out with cousin Dream Kardashian in January 2025.
Brother-Sister Bond
Just look at this precious siblings pic from December 2024.
#BabyRob
"Fun fact," Khloe wrote on Instagram in November 2024 alongside this photo of Tatum, "this is my brothers Boy Scouts hat #BabyRob #twins."
Purr-fect Pals
Tatum bonded with the family cat, Grey Kitty, in this sweet video Khloe shared on Instagram in January 2024.
Christmas Spirit
Khloe shared a look at her kids in matching holiday PJs in December 2023, writing, "The MOST magical time of year!!! We are in the Christmas spirit in our Christmas pajamas and our Christmas dance moves."
Selfie With Mom
Khloe Kardashian shared this pic of herself with daughter True Thompson and son Tatum Thompson in August 2023.
"Tristan Jr" & "Rob Jr"
"I just can't handle it!!!!! You with Tristan Jr & Rob Jr," Kim Kardashian commented, to which Khloe responded, "@kimkardashian facts!!! Lol"
Father-Son Moment
Dad Tristan Thompson shared his first photos of Tatum for the little one's first birthday in July 2023.
Birthday Love
Khloe wished Tristan a happy 33rd birthday in March 2023, sharing this photo of the NBA star with their two kids on Instagram Story.
Sibling Hugs
True hugged her brother on the trampoline.
Family Forever
Tristan's oldest child Prince, who he shares with ex Jordan Craig, spent some time with True and the baby.
Sibling Love
Khloe and Tristan's daughter True carried her little brother in her arms.
Sweet Kicks
Khloe snapped a photo of her son's adorable sneakers.
Mini Milestone
Khloe shared a video of Tatum crawling in July 2023 ahead of his first birthday.
Happy 4th!
Khloe's baby boy Tatum was in full summer mode for the Fourth of July 2023.
Welcome to the World
Khloe and Tristan's baby boy made his TV debut on the season two premiere of The Kardashians.
Mother-Son Moment
Khloe cuddled her baby boy—rocking a blue hooded onesie—during The Kardashians season three finale.
Doting Mom
Khloe brushed Tatum's hair during a sweet moment on The Kardashians alongside Tristan.
Mini-Me
According to grandma Kris Jenner, Tatum looks just like uncle Rob Kardashian.
Meeting Grandma
On the show, the baby boy also spent some quality time with Kris, who prefers to be called "Lovey" by her grandchildren.
Baby Boy
He made a brief appearance on a July 2023 episode of The Kardashians.
Playtime
True shared a laugh with her parents on the trampoline.
Like Father, Like Son
The basketball player snuggled with his son.
Little Rider
True joined Khloe and Tristan on a car ride.
All Smiles
Tristan flashed a smile as he held True and the newborn in his arms.
Girl Dad
Khloe and Tristan celebrated Thanksgiving 2018 with their daughter True.