Julia Roberts wishes her ‘gorgeous’ son Henry a happy 17th birthday with an adorable throwback baby photo

“Unbelievable that this baby is now a tremendous 17-year-old miracle,” Roberts wrote in her tribute

Julia Roberts is the proud mother of a “beautiful” 17-year-old!

On Tuesday, June 18, the 56-year-old actress celebrated her son Henry’s birthday by sharing an adorable photo of him as a baby on Instagram.

“Unbelievable that this baby is now a massive 17-year-old prodigy! Happy birthday beautiful Henry 💙,” Roberts wrote alongside the photo, which shows her smiling broadly as she carries him in her arms.

Roberts shares the birthday girl with her husband Danny Moder. The two are also parents of twins Hazel and Phinnaeus, 19.

Related: Everything about Julia Roberts’ 3 children – and everything she said about motherhood

At a performance on The Tonight Show with Jimmy Fallon In December, Roberts said Henry was the only child left at home after his two siblings went to college.

“I think it’s a good 50/50 split. He is loving it. And I think he misses his people,” Roberts said, noting that all three children are doing “great.”

The Oscar winner attributes her success early in her career to being able to be there with the two as they reached new milestones.

Related: Celebrity Kids We Rarely See (Photos)

“By the time I finally had a successful family life and had a husband and children who wanted to stay at home, I had already worked for 18 years. And so I felt like I could afford the luxury. I didn’t have to choose one or the other,” she said. British Vogue in January.

She described the opportunity to concentrate on her children as a “luxury.”

“It was easy to put work life on hold to take care of my personal life. And because I have friends who work and have to go to the bathroom to get the breast pump out at the same time, I kind of went through that vicariously with them,” she told the outlet. “I was deeply grateful for that time when I could allow myself the luxury of staying home and being with my family.”

Last December, Roberts told PEOPLE about a recent shared memory they shared.

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“I discovered a series with my children, Wonderful yearsthat I had never seen before. And boy, did we always look forward to snuggling with it,” she told PEOPLE.

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