Celebrity Parents Anderson Cooper Shares Adorable Video of 'Sweet and Strong' Son Sebastian on First Birthday Anderson Cooper is dad to sons Wyatt, 2, and Sebastian, 12 months By Georgia Slater Georgia Slater Twitter Georgia Slater is a writer/reporter on the Parents team at PEOPLE. People Editorial Guidelines Published on February 9, 2023 02:28 PM Share Tweet Pin Email Photo: Anderson Cooper/instagram, Randy Brooke/Getty Anderson Cooper is celebrating his baby boy on his first birthday! The CNN journalist, 55, shared an adorable video of his son Sebastian Luke on Instagram Thursday, honoring his little one as he celebrated his first birthday. In the cute clip, Sebastian intently listens to a music box that plays "It's a Small World," which Cooper noted is an "old music box that belonged to my mom." "Sebastian just celebrated his 1st birthday!" Cooper wrote alongside the clip. "Sebastian is sweet and strong and smart and loves his big brother Wyatt a lot. They fill my heart with joy and love in a way i never imagined possible. Happy Birthday Sebastian!" Along with Sebastian, Cooper is dad to 2-year-old son Wyatt Morgan. Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories. Kelly Ripa Wishes Anderson Cooper's Son Sebastian a Happy 1st Birthday — See the Sweet Photo! Earlier this week, Cooper's close friend Kelly Ripa sent Sebastian a sweet birthday message on Instagram. "Joyeux anniversaire Sebastian 🎈," the Live with Kelly and Ryan co-host wrote in French in the photo caption. In the photo, Ripa cradled the baby boy, his eyes closed as he slept. She had a burp cloth over her shoulder as she looked down at Sebastian smiling. "I love you 🎂 (that was a fast year @andersoncooper @benjaminmaisani)," she added. Cooper announced Sebastian's birth last February during an episode of Anderson Cooper 360°. "This is Sebastian Luke Maisani-Cooper. He was 6.8 lbs. at birth and he was healthy and happy and even his occasional hiccups, are to me, adorable," Cooper said. "He mostly just sleeps and eats and certainly poops, but he already seems like a wise and thoughtful little chap."