Victoria Secret’s supermodel Alessandra Ambrósio and her fiancé Jamie Mazur welcomed their first son in Florianopolis, Brazil on Monday.

The couple  -- who’ve been dating since 2005 -- already have a daughter,  3∏-year-old Anja Louise.

“Welcome my son, can’t wait to show u around this crazy place,” Jamie Mazur Tweeted Monday.

At this time, there’s no word on the baby’s name.

Alessandra Ambrosio may be four months pregnant but she still looks every inch the Victoria’s Secret beauty as she flaunted her baby bump in a tiny bikini on Thursday.

She posted the image of herself and her gorgeous three-year-old daughter Anja Louise on Facebook as they soaked up the sun during their tropical beach vacation.

The 30-year-old Brazilian model announced this week that she was expecting her second baby with fiancé Jamie Mazur and proudly displayed her growing belly in the cute picture.

Victoria's Secret stunner Alessandra Ambrosio and fiance Jamie Mazur are expecting their second child.

The wiry 30-year-old Brazilian supermodel and businessman have been in a relationship the past six years. They have one daughter, 3-year-old Anja Louise.

"Family is the most important thing for me and I'm thrilled to be adding to the family," she told US magazine in a statement. "I'm fortunate to have a loving and supportive family.

“It's a blessing that it will soon be growing."

Life’s a beach for Alessandra Ambrosio and her hot bikini body!

The Victoria’s Secret angel made a splash in Maui on Wednesday, hitting the shoreline in an itty-bitty bikini – and RadarOnline.com has the scorching hot photos.

PHOTOS: Alessandra Ambrosio Strips Down Into Her Bikini In Maui

Victoria’s Secret model Alessandra Ambrosio hit the beach in Hawaii with her family in tow and RadarOnline.com has the photos.

The gorgeous 30-year-old Brazilian flaunted her ‘perfect 10’ body on Sunday while playing in the water with daughter Anja and walking the beach with fiancé Jamie Mazur.

Model mom Alessandra Ambrosio went back to work this week and RadarOnline.com has obtained the latest sexy snaps from her photo shoot.

PHOTOS: Alessandra Ambrosio’s Steamy Bikini Shoot

The Brazilian bombshell headed to the beaches of St. Bart’s for the latest Victoria’s Secret swimsuit issue.

PHOTOS: Victoria Secret Beauties

Alessandra splashed around in the waves as she tousled her hair and gave her sultriest stare to the camera.

PHOTOS: Hot Model Moms

A little less than a year ago, Ambrosio and her fiance Jamie Mazur welcomed their first child together- a little girl named Anja Louise Ambrosio Mazur.