After giving birth to a baby on Monday afternoon, Alessandra Ambrosio has revealed the name of her newborn son!

The 31-year-old Victoria's Secret Angel shared via Facebook on Tuesday:

“Well, the day just arrived and we couldn’t be more happy!!! Noah Phoenix was born yesterday afternoon and already stole our hearts. Anja is a proud big sister now and we are so thankful he is with us.”

The Brazilian stunner is engaged to businessman Jamie Mazur, and it sounds like he's hoping their little boy will become a musician!

Mazur shared via Twitter after his son's birth: “Noah Phoenix will be performing on the main stage at Coachella 2035 with special guest Thom York Save the date. It should be a good show.”

Congrats!

Victoria's Secret model Alessandra Ambrosio and her fiance Jamie Mazur are the proud parents to a newborn son.

Mazur Tweeted the following about the good news: "Welcome my son, can't wait to show you around this crazy place."

The little boy, whose name has not been released, has a 3-year-old sister, Anja.

This past weekend, Alessandra enjoyed a baby shower with family and friends.

On Saturday, she Tweeted, "So much fun at my little boy baby shower! Now just have to wait for him to arrive!"

Looks like the 30-year-old beauty didn't have to wait much longer! Congrats to the family of four.

Leave it up to a Victoria's Secret supermodel to pose nude at eight-months pregnant and still look better than most women ever will!

Alessandra Ambrosio stripped down for a new ad campaign for Brazilian jewelry line Vivara, and we have to admit it's a little hard to focus on the baubles with that baby bump on display!

The 31-year-old beauty is already mother to a daughter, Anya, and is expecting a baby boy with fiance Jamie Mazur next month. "A nude photoshoot was good, because pregnancy makes me much more confident. I'm proud of my body for generating a life," the catwalker explained while promoting the jewelry line.

She hasn't even given birth yet, but already she is thinking about her comeback! She has given her booker and agent the thumbs up to contract her for jobs, and she's confident that she will get her body back in no time.

Must be nice to have a super human bod!

Alessandra Ambrosio

Alessandra Ambrosio has just announced that she's expecting a baby boy with fiancé Jamie Mazur!

The Victoria's Secret model revealed the big news with fun beach pic on her Facebook page, with the caption: "We really tried to keep it a surprise but we were too anxious! Soon, we will have a little boy to rock our world!!”

Apparently the Brazilian supermodel has been wanting a boy for a long time, telling E! Online, "I actually thought my first baby was going to be a boy, but then, of course, was very happy to get a girl, but now I am getting a boy as well, it’s absolutely perfect. It’s the best news.”

Ambrosio is due in May, and the happy couple also has a 3-year-old daughter, Anja Louise.

Sigh ... if only we could all look this good when we're 7 months pregnant!

Alessandra Ambrosio attended the Philips Satin Perfect Event at the Grove yesterday, and the Victoria's Secret model proudly showed off her baby bump in a loose-fitting white frock.

Alessandra and her stylist, Inge Fonteyne hosted the event, which promotes Philips' new razor. No wonder she showed off her sexy and smooth stems!

Looking chic in a black maxi dress that showed off her adorable baby bump, Victoria's Secret Angel Alessandra Ambrosio braved the dreary weather to take daughter Anja to the premiere of Mirror Mirror, in Hollywood on Saturday afternoon.

The adorable little girl donned a tiara for the special occasion, and they even met up with another supermodel mom!

Ambrosio shared a Twitpic from the theater, with the caption: "Having fun with Anja and my friend Gisele at the after party for the Mirror Mirror premiere!!!"

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Adorbs!

Alessandra Ambrosio may be pregnant with her second child, but the Victoria's Secret stunner is the definition of a multi-tasking mama!

The 30-year-old model took her adorable daughter Anja for a playdate at a Malibu park, and we can't get over how effortlessly gorgeous she looks! Rocking rolled-up jeans, a tie-dye sweater, and a simple ponytail, she proved she can dress down and still be ready for the catwalk!

Alessandra was recently caught in bed with Ashton Kutcher....for work, of course! The sexy duo shot an ad campaign for the Autumn/Winter 2012 collection of the Brazilian brand Colcci.

See the precious pic the VS Angel tweeted of her daughter, after the jump ....

Now you see it ... now you don't?

Last night Alessandra Ambrosio attended CAA's pre-Oscar party in Beverly Hills, and she showed off her growing baby bump in a short dress, but earlier in the day we could barely see it when she was snapped running errands! We know it's just the angle, but at first glance, we totally forgot the Victoria's Secret model was expecting!