Sean Loweshared an adorable photo of his two sons with wifeCatherine Giudici Lowe—Isaiah Hendrix, 19 months, andSamuel Thomas, 3 — staring at their newborn sisterMia Mejiaon Instagram Thursday.
In the photo, Isaiah and Samuel wear white-patterned onesies that match the blanket wrapped around Mia as they crowd around her and smile.
“They love her. And like her daddy, she’s unsure about them,” Lowe, 36, joked in the caption.
Giudici Loweannounced the birth of their third childon Monday with a sweet Instagram selfie.
The proud mom of three shared a photograph of her children and herself on her hospital bed, writing, “Christmas this year didn’t have us unwrapping gifts under the tree or leaving milk and cookies out for Santa, but we wouldn’t have changed a thing. ?????.”
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Catherine Giudici Instagram

On Wednesday, Lowe also shared a photo of Samuel holding Mia in his lap.
“He’s a natural,” he wrote in the caption.
RELATED VIDEO: Sean and Catherine Giudici Lowe Family Goals
They revealed their third pregnancy news exclusively to PEOPLE in June, with Giudici Lowe saying “it was a complete surprise” to be expecting again.
“Isaiah was 11 months old when we found out,” she added. “It was a little overwhelming to think about but we wanted a big family. This is just theway it was supposed to happen. So we’re excited.”
“Obviously, it’s going to be overwhelming and exhausting but they get to be best friends forever,” the then-expectant mom told PEOPLE. “We get to have these children who are goingto be so close in age and get to grow upand have all these memories. Yeah, it’ll be hard for us but it’s just a chapter. It’s so fleeting.”
“I had wanted to try for a girl and so that went through my head,” she said of the moments right after she and Lowelearned they were expecting again. “That went out the window! I thought, ‘Oh my gosh, I might have a third boy!’ And we won’t find out until it’s born. We’ve done that every time.”
source: people.com