It's a "sweet baby boy" for Tiffany Trump, who's announcing the birth of her first child.
"Welcome to the world our sweet baby boy, Alexander Trump Boulos," the 31-year-old daughter of President Trump wrote on social media on Thursday.
"We love you beyond words!" she said in a note to her son with husband Michael Boulos.
"Thank you for coming into our lives!" added Trump, the president's daughter with ex-wife Marla Maples.
A black-and-white image of a baby's foot being cradled in a hand accompanied her message.
The commander in chief had revealed in October that his youngest daughter was pregnant.
"She’s an exceptional young woman. And she’s going to have a baby. So that’s nice," Trump said at the time while delivering remarks at the Detroit Economic Club.
Last month, Ivanka Trump shared photos of her half-sibling's baby shower.
"Tiff, you’re going to be the most wonderful mama. Your baby boy is already so loved — and so lucky to have you!” Ivanka Trump said.