Ali introduced her new 4-week-old baby boy on Twitter!

Ali Landry and her hot director husband Alejandro Monteverde welcomed little Marcelo Alejandro Monteverde on Oct. 8. And he looks just like his daddy!

“Alejandro and I are so grateful to have a healthy, new baby boy as the latest addition to our family,” Ali told HollyBaby.com exclusively after Marcelo’s birth.

And the happy family seems to be doing well! “Alejandro was able to leave his film for two days to be with us for Marcelo’s birth,” Ali tweeted. “Marcelo looks just like him.”

Congrats to the family!

More on Ali Landry:

1. Ali Landry Gives Birth To A Son & Gives Us An Exclusive Quote!
2. Ali Landry Might Be In Labor! She’s Already Dilated!
3. FOUR Pregnant Stars Bump Off At The Red CARpet Event! Who Dressed The Best?

The model/actress and fashion designer showcased her new kids collection in NYC over the weekend, and had some things to say about her ex-husband and his newborn baby.

It’s been six years since Ali Landry and Mario Lopez split after just 18 days of marriage, but it’s clear that some wounds take a while to heal. While Ali was launching her latest collection for her kids clothing line Belle Parish at New York Fashion Week on Sept. 12, her ex-husband became a new dad to a daughter named Gia. But Mario, 37, better not be counting on receiving a baby gift from his ex-wife.

When HollyBaby.com asked the 37-year-old whether she’d be sending Mario and his girlfriend Courtney Mazza, 28, some clothes from her line for their new addition, she replied, “Probably not, no. I wish him the best, absolutely. I just, you know, I wish from my perspective what happened to me doesn’t happen to his partner.”

Ouch! In case you don’t know the back story, here goes: After dating the Extra host for six years, Ali and Mario got engaged and married on April 24, 2004. But then Ali found out that Mario had allegedly cheated on her the day before the wedding, then again right after. The marriage was annulled 18 days later, on May 12. But Ali bounced back, marrying film director Alejandro Gomez Monteverde (who she met in a Bible study class) in April 2006, giving birth to daughter Estela in 2007, and launching Belle Parish last year.

–Roger Singer (Reporting by Lindsey DiMattina)