Shortly after their baby boy arrived, Ivanka took to Instagram to announce the happy news.
The 34-year-old fashion designer posted a message which read, "It's a boy! We Welcome With Love Theodore James."
In the caption, Ivanka expressed her gratitude and excitement, writing, "Jared and I feel incredibly blessed to announce the arrival of Theodore James Kushner. Jared, Arabella, Joseph and I are so excited to welcome this sweet little boy in to our family!"
The mother of three later posted the first photo of the little boy on Facebook.
"Baby Theodore. My heart is full, Ivanka #grateful," she wrote.
Jared and Ivanka announced that they're expecting their third child back in November 2015.