Ivanka Trump shares photo of son Joseph Frederick

Now the proud mother introduced her son to the world by posting on her Trumbr page two pictures of her bundle of joy.

COURTESY IVANKA TRUMP

The first shows her cradling him, with the caption: “We welcome with love, Joseph Frederick Kushner,” and the second with her daughter Arabella holding her little brother, also with a caption: “Arabella is such a proud big sister!”

COURTESY IVANKA TRUMP

Trump, 31, explained the meaning of her baby boy’s name.

“Please join in our joy as we welcome Joseph Frederick Kushner, named after each of our paternal grandfathers, both master builders of their generation and inspiring patriarchs of their families,” she wrote on her Tumblr page.

“Jared’s grandfather, Joseph, was a rock. His indomitable spirit, his sense of family, and his work ethic are the values we hope to hand down to our son. My grandfather, Frederick, was a builder not just of tens of thousands of homes throughout this city, but of a tight-knit family that honors to this day the traditions he established. Both men set the standards that have been passed down through the generations and which we hope to impart upon Joseph and Arabella. They created a legacy for our family that inspires our careers as well as our love and respect for one another. We are honored to name our son after these two distinguished men. We feel so blessed with the newest member of the family!”

In addition, a cute picture of her daughter Arabella shows her preparing for the arrival of her little brother, practicing with a doll.

COURTESY IVANKA TRUMP