Sleepy-eyed proud papa, Tom Brady, announced the news at a press conference this morning, reports People magazine. "I didn't get much sleep last night," he confessed.
It's the 29-year-old Brazilian beauty's first child, and second for the New England Patriots quarterback. Brady has a son with ex-girlfriend Bridget Moynahan.
However, his first child arrived under much more stressful circumstances: Moynahan was pregnant when Brady started dating Gisele.
And need we remind you of the extravagant gift basket Bündchen sent to the new mom? It included the tactful (read: slap in the face) "Supermodel" onesie.
Feuding aside, Brady says that his second son's birth is "a wonderful experience in my life," according to the magazine.
For the star quarterback, the baby's gender did not come as a surprise. He told People earlier this year, "I wanted to find out and she didn't, so she said, 'Go ahead,'" Brady explained.
While no baby name has been released, we're already placing bets on the child's future. With genes from the likes of Bündchen and Brady, there may be a supermodel-football player in the couple's future.