The supermodel, 53 years old, has become a mother for the second time.
She posted a photo on Instagram of her holding the baby in her arms while her 2-year-old daughter holds his hand in hers.
"My little one, know that you are loved beyond measure and surrounded by love from the moment you made us happy with your presence. A true gift from God. Blessed. Welcome baby. It's never too late to be a mother." – wrote the model.
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Campbell, was 50 years old when she became the mother of a daughter. Last year, she encouraged her older friends not to "be reluctant" to have children.
In May 2017, Naomi told the Evening Standard magazine that she wanted to become a mother, but preferred not to rush. "I think about having kids all the time," she said at the time. "But with the way science is now, I think I can do it whenever I want."