The 11-month-old is ready for his first Christmas

Phoenix, Paris Hilton. PHOTO: TIKTOK; GETTY

Paris Hilton’s son Phoenix is feeling the Christmas spirit!

“Baby P getting into the Christmas decorations✨👶🏼🪩🎄✨,” the new mom, 42, captioned a TikTok video on Sunday of her 11-month-old keeping himself entertained with an ornament.

In the cute clip, the baby boy bounces in a walker in front of a large painting of his mommy, and two pink Christmas trees covered in silver adornments.

@parishiltonBaby P getting into the Christmas decorations✨👶🏼🪩🎄✨

♬ original sound – ParisHilton

“Did you take that off the tree?” Hilton asks as Phoenix coos and hits the shiny object against his walker. As she inches closer to him, he wheels himself away in the opposite direction.

Phoenix was born on Jan. 16 via surrogate to Hilton and her husband Carter Reum. After his arrival, Hilton spoke exclusively to PEOPLE about what it was like becoming a first-time mom.

“It’s always been my dream to be a mother and I’m so happy that Carter and I found each other,” she said in late January. “We are so excited to start our family together and our hearts are exploding with love for our baby boy.”

Paris Hilton and Carter Reum with their son Phoenix Barron Hilton Reum.PARIS HILTON INSTAGRAM

She previously opened up about wanting to grow her family and trying the in-vitro fertilization (IVF) process during the height of the COVID-19 pandemic.

“We started going and doing it like a few months in because the world was shut down,” she told PEOPLE last December. “We knew we wanted to start a family, and I was like, ‘This is perfect timing. Usually, I’m on a plane 250 days out of the year, and let’s just get all of the eggs stocked and ready,’ and we have tons of them just waiting.”

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And now that her dreams have come true, Hilton often shares footage of him on social media, as well as in her television series Paris in Love.

“This new season of #ParisInLove means the world to me,” she captioned an Instagram carousel last week. “I was so scared to open up and share more of myself and my beautiful growing family, but reading all of your comments and words of support makes it all worth it. Love you🥹💖✨ Stream it now on @Peacock 💘.”

In the cover photo of the upload, Hilton held Phoenix in her arms while gazing at him. She also recently shared that her family expanded for a second time as they welcomed daughter London Marilyn Hilton Reum in November via surrogate.

“Thankful for my baby girl🥹🩷👶🏼,” the entrepreneur captioned a Thanksgiving upload. Included in the announcement was a pink long-sleeved top with “London” embroidered into it, paired with a set of pink leggings.

Paris Hilton and son Phoenix.PARIS HILTON/ INSTAGRAM

The family of four is looking forward to the holiday season.

“I am so excited to have our first holidays together,” Hilton told PEOPLE in late November. “Thanksgiving was so special, surprising everyone with London and getting to show Phoenix the Christmas tree for the first time. Seeing his eyes light up and seeing the wonder in his eyes, it’s such a magical experience. I can’t wait for our first Christmas together as a family.”