Jamie McCarthy / WireImage 1 / 16
Jamie McCarthy / WireImage 1 / 16

Alessandra Ambrosio and Jamie Mazur's baby boy has a name!

The Victoria's Secret model and her longtime fiance welcomed their baby boy into the world on Monday and revealed his name Tuesday on Facebook.

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"Well, the day just arrived and we couldn't be more happy!!!" Ambrosio, 31, wrote on her Facebook page. "Noah Phoenix was born yesterday afternoon and already stole our hearts."

The couple is already parents to daughter Anja, 3. The proud mother added in her post, "Anja is a proud big sister now and we are so thankful he is with us…"

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Mazur, a California businessman, tweeted the birth announcement Monday. He wrote, "Welcome my son, can't wait to show you around this crazy place."

On Tuesday, he joked, "Noah Phoenix will be performing on the main stage at Coachella 2035 with special guest Thom Yorke Save the date. It should be a good show."

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