Giuliana and Bill Rancic Welcome Baby Edward Duke

Giuliana and Bill Rancic became the proud parents of a baby boy on Wednesday after their gestational surrogate mother gave birth to the couple's first child.

The pair, who suffered multiple setbacks in their own natural attempts for a baby, welcomed baby Edward in to the world who weighed in at 7 lbs., 4 oz.

"Edward Duke Rancic was welcomed into the world last night at 7lbs 4oz. G & I feel blessed beyond words...We did it!" Bill tweeted on Thursday.

The couple, who has not yet revealed the identity of their surrogate, admitted that they were nervous about selecting a surrogate but insisted that their choice was instinctual, and that they were extremely thankful to the surrogate who agreed to carry their genetic child.

"Once we met her it was an instinct we had. We could tell she was a great person," Giuliana told People magazine.

Doctors had fertilized Giuliana's egg with Bill's sperm and froze the embryo before implanting it inside their gestational carrier.

"The baby is 100 percent genetically ours. It's our embryo," Bill said.

The surrogate mother, who reportedly lives in Colorado, was said to be an ideal choice for the couple who was honored to select her.

"[She's] a really nice girl who comes from a good family. Knock on wood, but I think we hit the gestational carrier lottery!" Bill previously told Us Weekly magazine.

"We go to this great clinic called CCRM and it was through our doctor, Dr. Schoolcraft, who referred us to the agency. That's how we found [her]," Giuliana said.

The good news follows months of heartache that the "Giuliana & Bill" stars have faced, including several failed IVF attempts, a miscarriage, and Giuliana's breast cancer diagnosis.

The couple was told to wait at least "three to five years" before trying to conceive a child in a bid to protect Giuliana's health.

"If she'd gotten pregnant, it probably wouldn't have been a very good outcome because of all the hormones- it would have made the cancer surge. So [surrogacy] was the best option," Bill said.

"Everything happens for a reason, and we believe this is meant to be and the way it was supposed to work out," he added.