Get ready to keep up with the newest addition to the Kardashian clan.
On May 25, the name of Khloe Kardashian and Tristan Thompson's son was revealed to be Tatum. As previously noted by the reality star, the moniker keeps with the tradition of starting with the letter "T" to match their 5-year-old daughter True's first initial.
However, it's been quite the journey finding the right moniker and keeping it a secret until the big reveal. "I wanted to meet him and feel him out a little bit," Khloe—who welcomed her son via surrogate last summer—explained during an April 5 episode of The Jennifer Hudson Show. "So now, if my daughter outs me, I'm screwed."
In the wake of his birth, Khloe also kept her son off social media and out of the spotlight. It wasn't until September when the Good American mogul introduced her baby boy to the world, sharing his birth story on the second season premiere of The Kardashians.
"I am so grateful," she said during the emotional episode, which showed Khloe and her ex visiting their son at the hospital shortly after his arrival. "It's such a beautiful gift that we're able to have."
The 38-year-old went on to share the first photo of her newborn's face in March, when she penned a birthday tribute to Tristan as they continued to co-parent. "You are truly the best father, brother & uncle," she wrote on Instagram. "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."
In the accompanying images, Tristan—who is also dad to sons Prince, 6, and Theo, 17 months—was pictured cuddling his youngest child.
"My birthday wish for u is that u continue to crave change, healing, and transformation," Khloe added in the caption. "Be strong, be kind, be patient, be free."
To see some of Khloe and Tristan's family moments with their son, keep reading.
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.