Congratulations are in order for Lester Holt! The NBC Nightly News star became a grandfather on Tuesday, Sept. 5 — and his new grandchild is simply adorable!

His son Stefan Holt and his wife, Morgan, welcomed their first child, and he was proud to share the special moment on Instagram. "Say hello to the newest member of our family. Henry Holt, born last night in NYC. Baby and Mom are doing great! #babyholt #family," he wrote next to a picture of the happy family-of-three.

Lester quickly followed up with an adorable post of his own! "The big story happened just after @NBCNightlyNews last night. Meeting our new grandson Henry. Welcome, little man," he captioned photos of him and his wife holding the bundle of joy.

Today even sent their well wishes to Lester and his family after the birth. "We're so happy for our friend and colleague Lester Holt who became a grandfather last night. Welcome to the world, Henry Holt, and congratulations to the entire Holt family," they wrote.

Lester and his wife, Carol Hagen, married in 1982 and are also parents to a son Cameron in addition to Stefan, who is a reporter for WNBC in NYC. Stefan and Morgan married in July 2012, and recently celebrated their fifth wedding anniversary.

Stefan took to Instagram to give Morgan a sweet shout-out on the day of the romantic milestone. "I'm so madly in love with this woman! Five years ago today, Morgan and I exchanged our vows and took off on this wild and crazy adventure of life. And we've only just begun," he wrote. "Happy anniversary to my amazing wife, and soon to be incredible mother to our son. It's an absolute joy to be your husband!" We can't wait to watch the Holt family continue to grow!