Julia Roberts (55) congratulated her twins on their 18th birthday with a sweet - and rare - snapshot on Instagram. The picture shows Phinnaeus, also called Finn, and Hazel as babies.

Roberts holds one of the twins in front of her chest, the sibling sits with his back to the camera and watches the two. "18", writes the Hollywood star. "I love you."

Although Roberts has restricted the comment function on the photo, some reactions can still be read. For example, actress Rita Wilson (66) wrote about the picture: "It can't be!" She also wished the siblings a happy birthday. But not only the wife of Tom Hanks (66) reacted to the post. Roberts' stylist Elizabeth Stewart captioned the photo: "Happy birthday kids!"

Hazel and Finn are from Julia Roberts' 2002 marriage to cameraman Danny Moder (53). Together, the couple had a third child, Henry Moder (15), in 2007.