So, is the 25-year-old actress planning on giving little Luca a baby brother or sister any time soon?
"[My husband] Mike and I are literally so obsessed with Luca. We're like, 'He's perfect -- we should just [have] one and [be] done,'" Hilary told Billy Bush and Kit Hoover on Friday's Access Hollywood Live, when asked if she and Mike want to have more children. "But I think once your baby starts getting older, you miss that baby phase and you go in for round two.
Adding, "I think maybe [we'll have another baby] when [Luca] is two or three."
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For now, the actress - who recently took to Twitter to proudly announce she's once again fitting into her pre-baby skinny jeans - said she's content with just one little man for now, as he's very curious and keeps her on her toes.
"He's into everything. I'm like, running around the house trying to keep up with him -- he's so fast," she said. "He loves the Christmas tree... he's just busy."
An avid dog-lover (she recently contributed to the new book, "A Letter To My Dog: Notes To Our Best Friends"), Hilary explained how she helped prepare her pups for Luca's arrival in order to quell any possible canine jealousy.
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"We kicked the dogs out of the bed about a month before Luca came so that they didn't blame the baby for why they couldn't sleep in the bed anymore," she said. "And we gave them a blanket to smell that Luca's smell had been on in the hospital and it worked!
"Mike brought Luca in, I came in, gave the blanket to the dogs and loved on them and said 'Hi,' and they've been fine with him," she added.
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"A Letter To My Dog: Notes To Our Best Friends," which also features contributions from Oprah Winfrey, Kristin Chenoweth and more, is available in stores now.
-- Erin O'Sullivan
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