The son of Peter Facinelli and Lily Anne Harrison made his adorable Instagram debut on Monday.
“Felt cute. Might enjoy later,” the 48-year-old “Twilight” star wrote in a sleepy photo of the child.
“Happy 1 week birthday Jack. 💪🏻❤️,” the actor wrote before revealing his son’s full name: “Jack Cooper Facinelli ⭐️.”
Facinelli’s former co-star Nikki Reed gushed about his newborn baby in the comments section.
“I love him so much, is it too soon for Aunt Nik’s kisses?” the actress, 34, wrote.
Harrison, 33, reposted Facinelli’s social media upload in her Story, writing, “My little angel boy.”
The screenwriter gave birth to her and alum ‘Nurse Jackie’ first child on September 5. The little one joined Luca, 25, Lola, 19, and Fiona, 15, who Facinelli shares with ex-wife Jennie Garth.
“Happy ‘Labor’ Day @lilyanneharrison ❤️,” the proud father wrote last week alongside a black and white photo of Jack’s hand. “September 5, 2022 .”
The baby arrived three months after Harrison showed her Instagram followers her baby bump.
“No burrito belly “, the then-expected star wrote in a selfie in June.
Facinelli said jokingly, ‘You are pregnant? 😳 Why didn’t you tell me?”
The “Supergirl” alum started dating Harrison in 2019. He proposed in January of the following year while on vacation in Mexico, but the couple has postponed their wedding several times due to the COVID-19 pandemic.
Prior to their romance, Facinelli was in a relationship with Jaimie Alexander. While he and his “Loosies” co-star, 28, got engaged in 2015, the former couple never made it down the aisle.
As for Facinelli and Garth, 50, the exes were married from 2001 to 2013.
The “Fastlane” alumnus discussed their divorce in a 2017 LaPalme Magazine interview, saying that he and the former star of “Beverly Hills, 90210” have been able to move forward with “love and respect” with their children in thoughts.
“As long as mom and dad are happy, the kids are happy,” Facinelli explained at the time. “Anyone going through a breakup needs to know” [that].”