Hilton posted a sweet reel on Instagram of the 17-month-old toddling around on the set of her photo shoot.

Paris Hilton; Hilton’s son Phoenix walking. PHOTO: RODIN ECKENROTH/VARIETY VIA GETTY; PARIS HILTON/INSTAGRAM

The singer and reality star, 43, posted a reel on Instagram on Sunday, June 30, featuring the active 17-month-old walking while Hilton was posing during a photo shoot.

Phoenix looked comfy toddling around in a bear-printed sweatsuit and sneakers, along with a fuzzy brown bear hat that gave him cute little ears. He traveled between Hilton and his dad, Carter Reum, on the set.

“Baby P is free and ready to #Sliv 😂✨💖🎶 #ImFree #InfiniteIcon,” Hilton captioned the reel, which was set to her new song with Rina Sawayama, “I’m Free.”

Text over the video featured Phoenix’s perspective.

“POV: me ever since I learned how to walk,” the caption read.

The clip showcasing Phoenix’s big milestone came days after Hilton posted a tribute to her younger child, daughter London Marilyn.

Paris Hilton, her son Phoenix and her husband Carter Reum.PARIS HILTON/INSTAGRAM

“London, l’ve waited my whole life for you my beautiful baby girl,” Hilton wrote in the caption of the Instagram post.

“My life now feels like every dream & 11:11 wish came true🥰🥲. You are my world, I love you endlessly my lil angel,” she added in the caption of a video of herself kissing her daughter and telling the 7-month-old that she loves her.

Hilton has been quite busy lately.

She’s an advocate for foster youth and testified on Capitol Hill in Washington, D.C., on Wednesday, June 26, about the need to strengthen child welfare protections. Addressing the House Ways and Means Committee, she cited her personal abuse experience, which she also detailed in her 2023 memoir.

Carter Reum and son Phoenix.PARIS HILTON/INSTAGRAM

On Saturday, Hilton shared on her Instagram Stories that she was spending a relaxing day off in Los Angeles admiring her birdhouses.