EchoSense Quantitative Think Tank Center|Kim Kardashian's Son Saint West Debuts Blonde Hair During Courtside Birthday Celebration

Saint West is EchoSense Quantitative Think Tank Centerfollowing in his mom's fashion footsteps.

Kim Kardashian, who's been known to enter her blonde era from time to time, showed off the 8-year-old's golden during his birthday outing to see the Los Angeles Lakers take on the Phoenix Suns.

The SKIMS cofounder snapped a sweet courtside selfie with Saint at the Dec. 5 basketball game, where her second-oldest was rocking his new ‘do and donning a LeBron James jersey.

"My twin Sainto," she captioned the heartfelt birthday post, which also featured several wholesome throwback pics and videos of Saint. "How are you 8 years old already! I just love you so so so much!"

But Kim—who along with Saint shares kids North, 10, Chicago, 5, and Psalm, 4, with ex Kanye West—wasn't the only Kardashian-Jenner to celebrate his birthday on social media. In fact, Grandma Kris Jenner posted a heartfelt message alongside her carousel of photos.

"Your smile and your spirit and your heart just keep getting bigger and bigger," she wrote on Instagram. "I love watching you grow up and play soccer and basketball and thrive at school and be the best brother to all your siblings and the best son, cousin, nephew, grandson and friend!!!

And aunt Khloe Kardashian also made sure to shoutout Saint on her Instagram Stories. The Good American cofounder shared a selfie with her nephew, writing, "You are sweet, loving, affectionate and I love seeing your bond with your siblings and your cousins."

She followed it up with a photo of Saint and Chicago with her daughter True, 5, adding, "We love you so much Sainty."

Keep reading to see some of the birthday boy's cutest photos.

"Happy 7th Birthday to my baby boy," Kim captioned a series of photos from her son's birthday celebration at an L.A. Rams game in December 2022. "I love you so so so much! I love seeing you grow into the kindest soul ever. Mommy loves you forever and ever!"

Kanye and Saint sat courtside at the Boston Celtics and Golden State Warriors' game in March 2022.

Saint gave mom Kim "all the feels" in a stunning portrait in October 2021.

Saint posed to show off his new hairstyle in October 2021.

Saint and little brother Psalm adorably crashed Kim's workout session in July 2021 to share a smooch.

Saint posed shirtless, wearing a necklace with his name on it, in a photo shared in July 2021.

Mom Kim posted a pic of a smiling Saint in July 2021, captioning it, "Just how???"

Saint buried his smile into mom Kim's arm as the duo posed for an adorable pic that Kendall Jenner snapped in July 2021. 

"OMGGGGG," mom Kim wrote along with two heart emojis for this sweet photo in May 2021.

Saint stretched his arms out while a cowboy boot-clad Chicago looked at the camera in a May 2021 snapshot.

Saint has his arm around sister Chicago in a picture-perfect stylish pic from May 2021.

Saint looked too cool for school in the sandbox during brother Psalm's 2nd birthday party. 

The stylish tot donned a backwards New York Yankees cap, bandana printed jacket and camo pants in a May 2021 Instagram pic. "Freshest Kid alert," proud mom Kim captioned.

Saint was stylishly bashful in a May 2021 Instagram pic.

Saint West was all smiles next to mom Kim during a May 2021 backyard photoshoot. 

Saint adorably gave mom Kim a kiss on the cheek in a May 2021 Instagram photo.

Saint hangs out with Kim's BFF La La Anthony's son, Kiyan.

Saint spent Oct. 16 with his little sister Chicago West and cousin Dream Kardashian. "Nothing fills my heart more," Kim Kardashian wrote alongside this heartwarming snap.

The gang's all here!

Saint and Reign Disick cheesin' during a family getaway to Colorado.

Kim summed up this adorable photo of Saint with the caption, "Look at this face!"

Saint and Reign were cheesing it up for the camera!

"Most days we don't get out of our pajamas," Kim captioned this cozy selfie with Saint.

A sibling snapshot of Saint and North West.

Kim shared a photo of her as a child alongside one of Saint, writing that he's her "twin in every way."

"This is a screenshot of Keeping Up With The Kardashians," Kim wrote on Instagram. "Look at what a little chunk Saint was! OMG My baby!!!!!! I miss him this small!!!!"

Two weeks after Saint's dinosaur-themed fourth birthday party, Kim shared a few snapshots from the event to Instagram. "Kanye and I threw Saint the coolest dinosaur party for his 4th birthday!!! He had so much fun! Thank you @mindyweiss," she captioned the December 2019 post.

"I have no words to describe how much I love your smile and those curls of yours Saint! You bring so much joy into my soul. You are so kind, loving and just so thoughtful and sweet! I am so happy today if your 4th birthday and We get to celebrate how much you've grown!" Kim shared in honor of her eldest son's big day.

Saint poses with a friend in this smiley shot. "Happy Sunday! These cuties always make me smile," Kim posted.

Saint got some shut-eye!