Ivanka Trump has named her son Joseph Frederick Kushner.

The 'Celebrity Apprentice' star - who welcomed her baby boy into the world in New York City on Monday (14.10.13) - shared pictures of him online and explained that he is named after his paternal great-grandfathers.

The 31-year-old blonde beauty, who also has a two-year-old daughter, Arabella, with her husband, Jared Kushner, wrote on her Tumblr page on Tuesday (15.10.13): ''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.

''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 honoured to name our son after these two distinguished men. We feel so blessed with the newest member of the family!''

Proud multi-millionaire grandfather Donald Trump previously said he was thrilled to have welcomed another member to his family.

He tweeted: ''My beautiful daughter Ivanka just had a healthy baby boy. Jared and Ivanka are very proud!''