The 40-year-old star welcomed her third son with boyfriend Gregorio Marsiaj, her representative confirmed to Us Weekly.
The Czech supermodel and her partner named their child Edward.
The couple is already parents to five-year-old George and two-year-old Philipe.
While pregnant with her newest arrival she admitted that carrying out parenting duties is a difficult job in itself.
However she admitted that she finds the tasks rewarding and a learning experience.
"Being a mother is a hard job, but it's the best in the world," she told the Daily Mail in December 2012. "Every day is something new and great."
When she introduced her first son, she confessed that she couldn’t balance her career and family life without help.
She hired a long-term child-minder in order to function effectively.
"I didn't want to have a nanny at first. I wanted to do everything on my own,” she told Elle magazine in April 2010. “But the best advice I can give is to have some sort of help. I believe that I bring positivity into the relationship by having a career. Working gives me personal satisfaction, and it's enriching for my son."