![OK Logo](https://okmagazine.com/ok_logo_black_small.png)
Alessandra Ambrosio Gives Birth to Baby Boy!
![Alessandra_ambrosio_may8_3_0.jpg](https://media.okmagazine.com/brand-img/RXLyPmA1R/480x251/2012/05/alessandra_ambrosio_may8_3_0.jpg?position=top 480w, https://media.okmagazine.com/brand-img/RXLyPmA1R/640x335/2012/05/alessandra_ambrosio_may8_3_0.jpg?position=top 640w, https://media.okmagazine.com/brand-img/RXLyPmA1R/768x402/2012/05/alessandra_ambrosio_may8_3_0.jpg?position=top 768w, https://media.okmagazine.com/brand-img/RXLyPmA1R/1024x536/2012/05/alessandra_ambrosio_may8_3_0.jpg?position=top 1024w, https://media.okmagazine.com/brand-img/RXLyPmA1R/1280x670/2012/05/alessandra_ambrosio_may8_3_0.jpg?position=top 1280w, https://media.okmagazine.com/brand-img/RXLyPmA1R/1440x753/2012/05/alessandra_ambrosio_may8_3_0.jpg?position=top 1440w, https://media.okmagazine.com/brand-img/RXLyPmA1R/1600x837/2012/05/alessandra_ambrosio_may8_3_0.jpg?position=top 1600w, https://media.okmagazine.com/brand-img/RXLyPmA1R/2160x1130/2012/05/alessandra_ambrosio_may8_3_0.jpg?position=top 2160w)
May 8 2012, Published 12:03 p.m. ET
And baby makes four for Alessandra Ambrosio's growing family! The supermodel's fiancé made the big announcement on Twitter yesterday.
OK! NEWS: ALESSANDRA AMBROSIO FLAUNTS HER BABY BUMP WHILE ON A HIKE
Jamie Mazur Tweeted, "Welcome my son, can't wait to show u around this crazy place."
OK! NEWS: PREGNANT ALESSANDRA AMBROSIO REVEALS — "IT'S A BOY!"
Luckily the Brazilian model had a baby shower this past weekend in Brazil, just in the nick of time! She Tweeted, "So much fun at my little boy baby shower !! Now just have to wait for him to arrive!!"
Their son has a big sis, 3-year-old Anja. Congrats to the happy family!