Time flies when you're keeping up with Khloe Kardashian.
In fact, it's already been a year since the Kardashians star welcomed her son Tatum Thompson via surrogate with ex Tristan Thompson.
And to celebrate the momentous occasion, Khloe took to Instagram on her baby boy's first birthday and shared rare family photos as proof that he's maturing fast. One picture showed Khloe holding a newborn Tatum in her arms next to 5-year-old daughter True Thompson—who she also shares with Tristan—and nieces Penelope Disick, 11, and North West, 10. In another image, the infant looked noticeably more grown dressed in a tiger costume for Halloween.
Other pictures Khloe posted included one of Tatum in a firefighter's helmet at cousin Psalm West's fourth birthday party in May, as well as an adorable pic of him playing with his big sister True during bath time.
"Happy birthday, my sweet son!" Khloe wrote in the caption. "I am a firm believer in that God gives you what you need and I needed you. God knew my heart needed you. I needed your sweet and precious Smile. I needed your angelic spirit. I needed a love only you could give me. I needed my son."
The Good American co-founder went on to share how "proud" she is of Tatum's "beautiful, gentle, loving, infectious spirit.
"Tatum, You have changed mine and True's lives forever," she added. "We both needed you. I knew she would be a fantastic, loving older sister, but I don't think I ever could've imagined the love and bond you guys already have."
Tatum's aunt Kim Kardashian also couldn't help but to gush about the baby boy, noting that he can totally pass off as his uncle Rob Kardashian's "twin."
"OMGGGG you are such a smoosh, the happiest baby boy of all time," Kim wrote on Instagram July 28. "I can't even tell you how loved you are and how special you are!"
To keep up with Tatum, keep reading to see photos from his first year.
Khloe Kardashian shared a photo of Tatum Thompson's face for the first time while wishing "best father" Tristan Thompson a happy birthday in March 2023.
The picture showed Tristan with his arms around his and Khloe's daughter True and Tristan's son Prince, who he shares with ex Jordan Craig.
The Most Wonderful Time of the Year
Khloe and Tristan's kids hugged while wearing matching holiday outfits in December 2023.
Cousin Love
Dream Kardashian joined the two siblings for a sweet cousin pic, with Khloe writing on Instagram, "The MOST magical time of year!!! We are in the Christmas spirit in our Christmas pajamas and our Christmas dance moves."
Twinning
Khloe carried her son at Kourtney Kardashian's baby shower in September 2023.
Cousin Cuteness
Kourtney's daughter Penelope Disick hung out with Tatum at the family party.
It Takes a Village
Khloe's BFFs Khadijah and Malika Haqq snapped a sweet pic with Tatum.
Kris Jenner, Khloe and baby Tatum celebrated the holiday.
Kris paid tribute to her 12th grandchild on his first birthday, writing on Instagram that she is "honestly in awe of how you look exactly like uncle Rob. It's wild and I love it!!!!"
She continued, "I love you my amazing Tatum!!! I love you my sweet boy."
Lovey & Grandson
Kris, who prefers her grandkids call her "lovey" as opposed to grandma, cuddled with Tatum.
Fall in Love
Tatum looked ready for fall with his apple and moss green outfit.
Tristan Thompson marked his son's birthday in July 2023, writing, "Tatum!! Happy birthday my son! You are a reminder of what life represents to me. You have taught me every loss comes a lesson and you are my gift. You are my reminder of all of God's messages. You are the reason that I began my story."
He continued, "The mistakes along the way are lessons not failures. There is no expiration date to reinventing yourself. Tatum your sweet soul reminds me of God's grace. You are a future king my son and I am so blessed to be your DaDa!"
Tatum flashed a perfect smile at the camera in this photo shared on his first birthday.
Big sister True proudly showed off her little brother in the kitchen.
The pair snapped an adorable selfie while enjoying some time outside.
Kim Kardashian shared a glimpse with Tatum for his first birthday. "OMGGGG you are such a smoosh, the happiest baby boy of all time," she wrote July 28. "I can't even tell you how loved you are and how special you are!"
Kim also joked in her caption, "You are Rob's twin! LOL Your auntie loves you SO MUCH."
He looked so grown up while rocking blue swim shorts and a straw hat.
On Tatum's first birthday, Khloe shared a throwback photo of her youngest wrapped in a towel.
Khloe's baby boy was dressed to impress in a firefighter hat.
Tatum wanted to investigate the foam during his big sister's bath time.
Tristan went to give Tatum a kiss in the series of images Khloe posted in her birthday tribute to the NBA star in March.
In a May 19 Instagram post, Khloe shared pics holding Tatum, who's facing away from the camera donning a grey t-shirt and a head of thick dark hair.
Khloe posted photos of True and Tatum bonding on a balcony, with True holding her baby brother as he grabbed onto the railing im one snap.
Tatum enjoyed some fresh watermelon while celebrating his first Fourth of July.
Khloe shared a selfie she snapped with her kids at their cousin Psalm West's fire truck-themed fourth birthday party on May 7, 2023.
In the photo, the tot wears a red, plastic firefighter's cap and sits on his mom's lap.
Ahead of Tatum's first birthday, Khloe celebrated a major milestone when she shared a clip of her son crawling on her Instagram Story.