Her name is Delphine and she helped carry the Rancic's son, Edward Duke to term.
The happy arrival came after Bill and Guiliana struggled to conceive naturally, undergoing three failed cycles of IVF.
Then last year during her treatment Giuliana was diagnosed with breast cancer, putting their dreams of a family on hold.
The couple decided to use a surrogate to try for a baby, and were thrilled when their attempt ended in a pregnancy.