Inside Justin, Hailey Bieber son Jack Blues' first birthday celebrations

Justin and Hailey Bieber must be over the moon as they celebrate a major milestone in their parenting journey: their son, Jack Blues Bieber, just turned one.

To mark their only child’s first birthday, the proud mother took to Instagram and shared two adorable new photos of herself and Jack, both dressed in white.

"1 year of you my beautiful boy. Happy 1st Birthday Jack Blues, you are joy personified," she wrote in the caption, attached with a blue heart emoji.

In the first slide, the mother of one beams with joy as she cuddles the birthday boy. In the second, she sweetly plants a kiss on his head.

In addition to the birthday tribute on her main feed, the Rhode founder gave fans a rare glimpse into Jack’s first birthday celebration via Instagram Stories.

She posted a candid shot of baby Jack, whose face was blocked by the blue and white balloons, playing and enjoying his new toys, including a mini soccer ball.

Another slide featured a bunch of helium-filled "1st birthday" balloons floating in the air, followed by a final story slide in which the model reshared her birthday post with a softer caption.

"My baby is 1 [teary eyes emoji]," Hailey, 28, wrote.

As of now, Justin, 31, has yet to post a birthday tribute for his only son, but he did upload an Instagram slideshow on Friday, including a studio photo, a peek at tiny Skylar slides, and a casual selfie.