Julia Roberts is a proud mother of three with husband Daniel Moder. Typically, Roberts keeps her personal life private, but she broke tradition early this week to celebrate twins Hazel and Phinnaeus' 17th birthday. Both parents shared photos of the twins at different points in their lives. Roberts shared a throwback photo to their very early lives, while Moder posted a picture of his kids years later. Both inspired shock from their followers that these kids could be turning 17 already. Check out the adorable rare glimpse into this family here. Julia Roberts celebrates twins' Hazel and Phinnaeus turning 17 View this post on Instagram A post shared by Julia Roberts (@juliaroberts) Earlier this week, Roberts took to Instagram to share a close-up photo of herself holding twins Hazel and Phinnaeus when they were just babies, eyes barely open, so small they were more hat than a person. In the caption, she calls the experience "17 of the Sweetest years of life," ending with abundant sparkles, hearts, and even more birthday cake. Julia Roberts celebrates Hazel and Phinnaeus' birthday, and 17 years of joy \/ Photo by Laurent Koffel\/ImageCollect.com \/ ImageCollect RELATED: Julia Roberts And Danny Moder Wish Son Henry Happy 14th Birthday With Rare Video The pair were born on November 28, 2004. Roberts, 54, typically reserves her social media presence to her own professional projects or some advocacy such as Red Nose Day and women's advocacy. Posts like these are a rare glimpse into her family life, and fans were offered two in short succession thanks to another picture shared by Moder. A testament to parenthood View this post on Instagram A post shared by modermoder (@modermoder) Moder, 52, also shared a post celebrating Hazel and Phinnaeus turning 17 last month. His was taken years later, and in the caption, he writes, "these rabble rousers\u2026 17 today. thank you for helping me through fatherhood." Like true heroes, both are decked out in heroic garb reminiscent of a DC legend. Danny Moder also celebrated the twins and lessons in parenthood \/ Photo Credit: Byron Purvis\/AdMedia \/ ImageCollect Moder and Roberts first became parents 17 years ago, and celebrated their 19th year of marriage in July. After first becoming a parent, Roberts noted an exponential decrease in free time. "But it\u2019s such a terrific trade-off," she added. "I don\u2019t have time to get a pedicure, but I sure am happy. Who cares if your feet look bad?\u201d As she came into her own parenting style, she knew she wanted to raise independent kids. "I don\u2019t want them to have some of the struggles that I had," she explained, adding, "But at the same time, you do need to know how to make your bed and do your laundry and make one meal. These are important life skills. They have to run their own race. They have to have their own experience." The happy family \/ Instagram via E! Online RELATED: Whatever Happened To Julia Roberts From \u2018Steel Magnolias\u2019?