Blink and you'll miss Aire Webster growing up right before your eyes.

In a new Instagram post, Kylie Jenner shared adorable pics of her and ex Travis Scott's 17-month-old son—and he's already color-coordinating outfits with his mom.

The snapshots show Kylie holding Aire in her arms, as the two snuggled up closely for the camera. The makeup mogul wore a green camo-printed hat with a white shirt and black mini-skirt for the snapshot, while her baby boy was dressed in a white graphic tee, green pants and black shoes.

As the Kardashians star captioned her post, "my big boy."

She continued the cuteness on her Instagram Stories, sharing glimpses into Aire's fun day playing with a bubble machine on a tennis court.

Just a few weeks ago, Kylie rang in the summer with a glimpse into her life as a mom to Aire and daughter Stormi Webster, 5, who she also shares with the "Sicko Mode" rapper. In one snapshot, the brother-and-sister duo are seen walking outside together amid a grassy landscape, with Stormi holding a soccer ball under her arm. Another photo showed Aire stepping out in a red plaid jacket and cargo pants.

Aire was previously known as Wolf Jacques Webster, though Kylie officially revealed his new moniker in January. The Life of Kylie alum previously revealed in March 2022 that she and her ex were still brainstorming new ideas for a name after having a change of heart.

"FYI our sons name isn't Wolf anymore," she wrote in an Instagram Story post that March. "We just really didn't feel like it was him. Just wanted to share because I keep seeing Wolf everywhere."

Keep scrolling for more adorable photos of Aire.

Kylie Jenner shared adorable photos of her and Aire snuggling close on July 14.

Kylie Jenner and Aire matched in color-coordinating green looks in an July 14 Instagram post.

Kylie shared this snap of Aire looking ever so fashionable to her Instagram in July 2023. 

In June 2023, Kylie shared an adorable video of Aire trying to drink out of a green bottle without using his hands.

Kylie shared this pic of Stormi Webster feeding her baby brother on Mother's Day 2023.

Aire makes a cameo in his mom's TikTok makeup tutorial in April 2023.

Kylie appears with Aire at the third birthday party of family friend Natalie Halcro's daughter Dove in March 2023.

Kylie shared a video of her son tasting his "first ice cream," a Dole Whip, at Disneyland in February 2023.

On Valentine's Day 2023, Kylie shared a photo of her baby boy with his gift.

Aire and Stormi play with toys.

The baby boy looked adorable in his car seat.

Kylie and her son share a laugh.

The mother-son duo hit the park together.

Kylie showed off her son's adorable cheeks in a February 2023 Instagram Story video.

The two made silly faces for the camera.

The Kylie Cosmetics mogul danced around with her baby boy to Stephen Sanchez's "Until I Found You."

On Jan. 21, 2023, Kylie revealed on Instagram that the new name of her and Travis' son is Aire, pronounced "air." She also shared the first photos of the child's face.

Aire, age 11 months at the time, checks things out.

Baby Aire sits down for a meal.

Kylie shared this adorable photo of her kids' Nike-clad feet in October 2022 on her Instagram Stories, illustrating the size difference between Stormi and her baby brother.

Big sister Stormi wore matching shoes with her little brother in October 2022.

In October 2022, Kylie shared a poolside photo with her son upon her return from Paris Fashion Week. She captioned the sweet mommy-and-me picture, "home."

Kylie shared this family pic on Father's Day 2022, writing to Travis, "Happy father's day daddyyyyy we love you."

In April 2022, Kylie shared this photo of Travis Scott holding their son at her mom Kris Jenner's Easter celebration.

In early May 2022, Kylie posted a video of herself and her family flying to and getting ready for the 2022 Met Gala. The footage included a quick peek at her and Travis' son. "Look at my son's cute shoes!" she exclaimed. "He can't even walk in them."

In mid-May 2022, on Mother's Day, Kylie posted a video documenting moments from her pregnancy with her son. It included footage of a 3-D sonogram from an MFM's office and a shot of herself holding her baby's hand.

In late May 2022, Kylie shared this pic of her baby boy in a Fisher-Price Jumperoo, appearing next to Stormi. The Kylie Cosmetics founder wrote, "I made these little feet."

Kylie shared this photo of her son with his big sister Stormi Webster on the day he was born—Feb. 2, 2022 (one day after Stormi's 4th birthday)